Right in both cases. I helped, or should I say, I was helped by the owner of a sheep camp from the 30's to get the trailer back on the road. It was a hoop and canvas top, in the traditional covered wagon style, not a hard shell. I bent a few new bows, added ribbing and devised a way to keep the canvas taunt.
My idea is to build up the trailer using the existing lower walls, and add a barrel top that over hangs the frame. The lower "outside" would be storage, and outdoor kitchen. I'll hinge one side for a tilt up living space and the other side would be the sleeping area.
What I would like to do is construct it with a rigid frame, covered with wood ship-lapped and hand riveted. Thought about shingling, but really don't want to have to cover it every time I want to move.
I guess I should have said, it will be for camping, boondocking only, as about half the time it will be far from civilization. I don't plan to Campground-camp as I am not interested in gawkers and guided tours.