About 3 years ago, my uncle took a old pontoon boat, mounted a truck camper on it, and put on a motor. The camper was as wide as the boat and he couldn't walk from the front to the back, so he took aluminum ladders, screwed some boards on them and mounted one on each side of the deck. They hinged up out of the way to keep the rig within the 8' width limit. Hinged down and held level with cables, he could walk from one end of the boat to the other. Had a 70 Johnson with controls in a small pilot house that had ac. Generator supplied electrical power.