A fellow pulled into the CG at TYBEE ISLAND last spring with a JAYCO TT/FW (don't remember which) minus the rear bumper, it was in the tow vehicle along with the bikes, which by the way were damaged as well. He had a welder come to the CG and he could not even make any repairs so everyhing rode home in the tow vehicle. The owners' manual clearly states do not add anything other than the factory spare to the bumper.
PINNACLE 2015 38FLSA. aka: "Roam Sweet Home"