This is a species of aquatic salamander native to the eastern United States and northern Mexico. They are referred by numerous common names, including two-legged eel, dwarf siren, and mud eel. Description: These are eel-like salamanders. Dark in colour and possess very small limbs. Adult Size: Can grow up to 27 in(69 cm) Accommodation
All recreational trailers having a gross loaded weight of 3,000 lbs. or more but less than 6,500 lbs. shall be equipped with brakes on at least 2 wheels. All trailers with a gross loaded weight of 6,500 lbs. or more shall be equipped with brakes on each wheel. The brakes shall be operable from the driving position of the towing vehicle.
So always use the GVWR of the trailer and apply the percentage of pin (kingpin) weight. For a trailer with a GVWR of 8,763, if pin weight is 18 percent of gross trailer weight, then the max pin weight would be about 1,580 pounds. FWIW: My fiver grosses 8,000 pounds wet and loaded. The pin weight is ~1,400 pounds, or 17.5 percent.