I’ve seen 3500 Dually trucks pulling a 35’+5’ trailer with full loads while driving. I’ve seen both with beds and with out. I’m buying a Dually in TX to be an owner operator with in the 65’ rule(not exceed it). Is it a Law that I can not remove the bed on a pick up truck? Yet I’ve seen plenty of 1 ton trucks with out a bed hauling trailers. Covers in Diamond plate and job boxes.