My Dad just got a toy hauler with 30 gallon gas tank for fueling the toys. He won't use all the 30 gallons on the toys, but it is also hooked to the generator and in a pinch, he could fuel his truck... His last trailer he had a platform built on the back that carried his generator and (2) 5 gallon gas jugs. That trailer had the axles closer to the rear so he had no problems with reducing the tongue weight. On my 73 pickup, I added a second gas tank and valve/switch to switch tanks. Lots of ways to solve problem, try to choose a safe way...
