Bowline on a bight advocate the use of a figure eight twisted version of the Bowline on a bight. This knot can be used to provide a toe hold in the middle of a rope; to make an emergency bosun's chair; and to create an upper rope "block" to make a crude purchase by threading the rope round an anchor point and then back up through the loop. It is sometimes used in sport climbing to tie into two anchor bolts independently. This knot is convenient when a dependable loop is required but neither end of the line is available. It's also commonly used
Lashing (ropework) clove hitch is tied around one leg only and frapping turns are taken between the poles. The round lashing is most frequently used to join two poles together to extend their length. In the simple version, a clove hitch is tied around both poles and there are no frapping turns. The tripod lashing (also known as gyn lashing, of eight lashing, and three-spar shear lashing) is used to join three spars together to form a tripod. Lashing (ropework) A lashing is an arrangement of rope wire or webbing with linking device used to secure and fasten two or more items