Bucking with Anderson Ultimate 5th Wheel Connection

FWIW we have a toyhauler and carry two motorcycles in the rear. If we travel without the bikes back there, which is rarely, the chucking is quite severe compared to when the bikes are loaded. I've never weighed the truck/trailer without the bikes loaded, so I have no idea what the empty pin weight is. But I assume the pin weight goes down a bit when the bikes are loaded at the back, and the trailer handles much better. I run about 65 psi in my air bags with a 3000 lb. pin weight.