for the purposes of promoting an understanding of the principles in accordance with the disclosure , reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same . it will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended . any alterations and further modifications of the inventive features illustrated herein , and any additional applications of the principles of the disclosure as illustrated herein , which would normally occur to one skilled in the relevant art and having possession of this disclosure , are to be considered within the scope of the disclosure claimed . before the present structures and methods for providing a sway control hitch are disclosed and described , it is to be understood that this disclosure is not limited to the particular configurations , process steps , and materials disclosed herein as such configurations , process steps , and materials may vary somewhat . it is also to be understood that the terminology employed herein is used for the purpose of describing particular embodiments only and is not intended to be limiting since the scope of the present disclosure will be limited only by the appended claims and equivalents thereof . it must be noted that , as used in this specification and the appended claims , the singular forms “ a ,” “ an ,” and “ the ” include plural referents unless the context clearly dictates otherwise . moreover , as used herein , the terms “ comprising ,” “ including ,” “ containing ,” “ characterized by ,” and grammatical equivalents thereof are inclusive or open - ended terms that do not exclude additional , unrecited elements or method steps . referring now to fig4 - 8 , there is depicted an embodiment of a pin 100 for securing a spring bar extending from a hitch head to a horizontal support member 35 ( see fig3 ) of , or extending from , a trailer frame . the pin 100 may comprise a shaft member that may include long leg 102 and a short leg 104 . the long leg 102 and the short leg 104 may meet at approximately a ninety - degree angle such that the pin 100 forms an inverted l - shaped . in an embodiment , the shaft member may have a rectangular cross section . in an embodiment , the shaft member may have a circular cross section or any other shaped cross section . a rotating spring clip or clip member 106 may be coupled to the long leg 102 of the pin 100 . in particular , as perhaps best observed in fig8 , the clip 106 may be hooped shaped and may include a frame 109 that defines an open interior or aperture 111 . the frame 109 may include a first side 106 a , a second side 106 b , a third side 106 c , and a fourth side 106 d . the first side 106 a and the second side 106 b may be opposing and parallel to each other . the third side 106 c and the fourth side 106 d may be opposing and parallel to each other . in addition , the frame 109 may extend between a first terminal end 120 and a second terminal end 122 . the first terminal end 120 and the second terminal end 122 may be located on the second side 106 b of the frame 109 . the first terminal end 120 and the second terminal end 122 may be separated by a small gap . in an embodiment , a first bore 110 may extend into a first sidewall 112 of the pin 100 . a second bore 114 may extend into a second sidewall 116 of the pin 100 . the first sidewall 112 and the second sidewall 116 may be disposed on opposite , lateral sides of the long leg 102 of the pin 100 . the first terminal end 120 of the clip 106 may be disposed in the first bore 110 and the second terminal end 122 of the clip 106 may be disposed in the second bore 114 . the resilient nature of the clip 106 may secure the first end 120 and the second end 122 in their respective bores . as can be observed in fig8 , in an embodiment , the axes of the bores 110 and 114 may be offset horizontally . in an embodiment , the axes of the bore 110 ( shown by a dashed line ) and bore 114 may be offset vertically as seen in fig5 . in an embodiment , the axes of the bores 110 and 114 may be offset from each other both vertically and horizontally , or in a first direction and a second direction . in an embodiment , the clip 106 may be substantially rectangular in shape . in an embodiment , the clip 106 may be hooped shaped . in an embodiment , the clip 106 may be circular shaped . in an embodiment , the clip 106 may include an optional finger loop as shown by the dashed lines 124 in fig8 . referring now to fig4 , 5 and 6 , the clip 106 may be operable between an unlocked position as shown in fig4 and a locked position as shown in fig6 . fig5 depicts an intermediate position for the clip 106 . in particular , the clip 106 may rotate between the unlocked position and the locked position as shown by the arrows in fig5 . the resilient nature of the clip 106 and the offset of the bores 110 and 114 may cause to clip 106 to remain in the unlocked position or the locked position . in this regard , the clip 106 may include a spring feature that maintains the clip 106 in the unlocked position or the locked position . the spring feature may be caused by the vertical and / or horizontal offset of the bores 110 and 114 . referring now to fig9 , there is shown a bracket assembly 150 mounted to a tongue 152 of a trailer ( not shown ). the bracket assembly 150 may include an l - shaped support member 154 ( also referred to herein as a “ spring bar support member ”) having a vertical portion 156 and a horizontal portion 158 . the horizontal portion 158 may include an upper surface 160 that provides a support for a spring bar 162 . extending through the horizontal portion 158 may be a pin hole 164 . installed in the pin hole 164 may be the pin 100 . in particular , the long leg 102 of the pin 100 may be disposed in the pin hole 164 . the clip 106 may abut against the upper surface 160 of the horizontal portion 158 to thereby define the limit of the progress of the long leg 102 through the pin hole 164 . that is , the clip 106 prevents the pin 100 from dropping through the pin hole 164 . as can be observed , the clip 106 is positioned in the unlocked position when the long leg 102 of the pin 100 is installed into the pin hole 164 . referring now to fig1 , where like reference numerals depict like components , there is depicted the clip 106 in the locked position . as can be observed , in the locked position , the clip 106 passes over the horizontal portion 158 of the l - shaped member 154 . the horizontal portion 158 then serves as a stop to engage an end member or stop portion 107 of the clip 106 to thereby prevent the pin 100 from disengaging the pin hole 164 . it will be appreciated that although the pin 100 is shown as an inverted l - shaped , that the pin 100 may be some other shape . in an embodiment , the pin 100 may be substantially straight . in an embodiment , the pin 100 may be curved or rounded . referring to fig4 and 10 , a distance , d , between the mounting bores for the clip 106 and the horizontal leg 104 of the pin 100 may be greater than 1 . 5 inches , or between 1 . 0 and 2 . 0 inches . thus , the horizontal leg 104 may not contact the spring bar 162 because the clip 106 may abut against the upper surface 160 of the horizontal portion 158 of the l - shaped member 154 . it will be appreciated that this feature reduces noise as any contact between a pin and a spring arm may produce chattering as the spring arm moves forward and backward while the tow vehicle is in motion . referring back to fig8 , a width , w , of the opening defined by the clip 106 may be about 1 . 375 inches , or between 0 . 75 and 1 . 75 inches . a length , l , of the opening defined by the clip 106 may be about 2 . 25 inches , or between 1 . 75 and 2 . 75 inches . it will be appreciated that there is criticality to the width , w , of the opening defined by the clip 106 . in particular , the width , w , allows the pin 100 to rise up when the spring arm pushes on the pin 100 . this can happen during a turn or when traveling on uneven terrain . further , the width , w , allows the clip 106 to clear the edge of the horizontal portion 158 of the l - shaped member 154 . in an embodiment , the clip 106 may define a bail . an embodiment of a trailer hitch system according to the present disclosure comprises : a spring bar joined with a hitch head and exerting a force on said hitch head ; a bracket for joining said spring bar to a trailer , said bracket having a horizontal portion having a pin receiving hole formed therein , the horizontal portion forming a spring bar support surface ; a pin having an elongated portion removably insertable into said pin receiving hole ; and a clip mounted to said pin , the clip having an elongated portion ; wherein said clip is rotatably operable between a locked position and an unlocked position ; wherein the elongated portion of the clip is disposed under the horizontal portion when the clip is in the locked position ; wherein the elongated portion of the clip is disposed above the horizontal portion when the clip is in the unlocked position . the above disclosed embodiment , wherein the clip forms a stop that limits a distance that the elongated portion of the pin extends through the pin receiving hole . the above disclosed embodiment , wherein the clip comprises a contiguous , elongated body member that extends between a first end and a second end . the above disclosed embodiment , wherein the body member defines a bail . the above disclosed embodiment , wherein the first end and the second end of the clip are mounted in bores disposed on opposing sides of the pin . the above disclosed embodiment , wherein axes of the bores are offset from each other . the above disclosed embodiment , wherein a width of an aperture defined by the clip is about 1 . 375 inches . the above disclosed embodiment , wherein a length of an aperture defined by the clip is about 2 . 25 inches . the above disclosed embodiment , wherein the clip comprises a finger loop . the above disclosed embodiment , wherein the pin forms an inverted l - shape . the above disclosed embodiment , wherein an axis of rotation of the clip is perpendicular to a longitudinal axis of the elongated portion of the pin . the above disclosed embodiment , wherein a portion of the clip abuts against the spring bar support surface of the horizontal portion to limit a distance that the elongated portion extends through the pin receiving hole . an embodiment of the present disclosure may include n apparatus for use in securing a spring arm to a bracket assembly attached to a trailer tongue , said apparatus comprising a shaft member having a first bore and a second bore formed therein ; a clip member defining a bail , the bail extending between a first terminal end to a second terminal end ; wherein the first terminal end of the bail is disposed in the first bore and the second terminal end of the bail is disposed in the second bore ; wherein the bail of the clip member is operable between an unlocked position and a locked position . in an embodiment , the first bore and the second bore are offset from each other in a first direction . in an embodiment , the first bore and the second bore are offset from each other in a second direction . in an embodiment , a cross - section of the shaft member is one of rectangular , square and circular . in an embodiment , the shaft member comprises an inverted l - shaped having a long leg and a short leg . in an embodiment , the shaft member consists of a straight leg only . in an embodiment , the first bore and the second bore are formed in opposite sides of the long leg . in an embodiment , the clip member comprises a spring feature to maintain the clip member in the locked position . in an embodiment , the clip member comprises a spring feature to maintain the clip member in the unlocked position . an embodiment of the present disclosure may comprise bracket assembly for supporting a spring bar extending from a hitch head , said bracket assembly comprising : a spring bar support member ; a mounting assembly for mounting the spring bar support member to a trailer frame ; a pin hole formed in the spring bar support member ; a pin having a shaft member configured and dimensioned to be installed in the pin hole ; and a clip member rotatably mounted to the shaft member , the clip member defining a stop portion ; wherein the clip member is operable between a locked position and an unlocked position ; wherein the stop portion of the clip member is positioned above the spring bar support member when the clip member is in the unlocked position and the pin is installed in the pin hole ; wherein the stop portion of the clip member is positioned below the spring bar support member when the clip member is in the locked position and the pin is installed in the pin hole . in an embodiment , the clip member limits a depth of the pin in the pin hole . in an embodiment , the shaft member of the pin comprises a first bore and a second bore formed therein , wherein the clip member defines a bail , the bail extending between a first terminal end to a second terminal end , wherein the first terminal end of the bail is installed in the first bore of the shaft member and the second terminal end of the bail is installed in the second bore of the shaft member . in an embodiment , the first bore and the second bore are offset from each other in a first direction . in an embodiment , the first bore and the second bore are offset from each other in a second direction . in an embodiment , a cross - section of the shaft member is one of rectangular , square and circular . in an embodiment , the shaft member comprises one of an inverted l - shape having a long leg and a short leg and a straight leg . it will be appreciated that the shaft member may comprise any other shape . in an embodiment , the first bore and the second bore are formed in the long leg . in an embodiment , the first bore and the second bore are formed in opposite sides of the long leg . in an embodiment , the clip member comprises a spring feature to maintain the clip member in the locked position . an embodiment of the present disclosure may comprise a trailer hitch assembly comprising : a spring bar joined with a hitch head and exerting a force on said hitch head ; a bracket assembly for joining said spring bar to a trailer tongue , said bracket assembly having a horizontal portion having a pin receiving hole formed therein , the horizontal portion defining a spring bar support surface ; a pin having a shaft member removably insertable into said pin receiving hole ; and a clip member rotatably mounted to said pin , the clip member defining a stop portion ; wherein said clip member is operable between a locked position and an unlocked position ; wherein the stop portion of the clip member is disposed under the horizontal portion when the clip member is in the locked position ; wherein the stop portion of the clip member is disposed above the horizontal portion when the clip member is in the unlocked position ; wherein the clip member limits a distance that the shaft member of the pin extends through the pin receiving hole ; wherein the clip member comprises a contiguous , elongated bail that extends between a first terminal end and a second terminal end ; wherein the first terminal end and the second terminal end of the clip member are disposed in bores formed on opposing sides of the pin , each of the bores having an axis ; wherein axes of the bores are offset from each other in a first direction and a second direction ; wherein a width of an aperture defined by the bail of the clip member is about 1 . 375 inches ; wherein a length of the aperture defined by the bail of the clip member is about 2 . 25 inches ; wherein the clip member comprises a finger loop ; wherein the shaft member of the pin defines an inverted l - shape ; wherein a portion of the clip member abuts against the spring bar support surface of the horizontal portion to limit a distance that the shaft member extends through the pin receiving hole ; wherein the clip member comprises a spring feature to maintain the clip member in the locked position . those having ordinary skill in the relevant art will appreciate the advantages provided by the features of the present disclosure . for example , it is a feature of the present disclosure to provide a trailer hitch system that is relatively simple in design and manufacture . another feature of the present disclosure is to provide such a trailer hitch system that reduces trailer sway and equalizes loads . it is a further feature of the present disclosure , in accordance with one aspect thereof , to provide a trailer hitch system having brackets . it is an additional feature of the present disclosure to provide a trailer hitch system having pins with clips for securing the spring arms . it is an additional feature of the present disclosure to provide a trailer hitch system having l - shaped pins for securing the spring arms . it is an additional feature of the present disclosure to provide a trailer hitch system having pins with retaining clips for securing the spring arms . it is an additional feature of the present disclosure to provide a trailer hitch system having pins with retaining clips with finger loops for securing the spring arms . in the foregoing detailed description , various features of the present disclosure are grouped together in a single embodiment for the purpose of streamlining the disclosure . this method of disclosure is not to be interpreted as reflecting an intention that the claimed disclosure requires more features than are expressly recited in each claim . rather , as the following claims reflect , inventive aspects lie in less than all features of a single foregoing disclosed embodiment . thus , the following claims are hereby incorporated into this detailed description of the disclosure by this reference , with each claim standing on its own as a separate embodiment of the present disclosure . it is to be understood that the above - described arrangements are only illustrative of the application of the principles of the present disclosure . numerous modifications and alternative arrangements may be devised by those skilled in the art without departing from the spirit and scope of the present disclosure and the appended claims are intended to cover such modifications and arrangements . thus , while the present disclosure has been shown in the drawings and described above with particularity and detail , it will be apparent to those of ordinary skill in the art that numerous modifications , including , but not limited to , variations in size , materials , shape , form , function and manner of operation , assembly and use may be made without departing from the principles and concepts set forth herein .