I always thought that a trailer made out of an old pickup bed with a cap on it would make the perfect trailer. And if the P/U had a utility bed on it some much better. Cut down on the space inside, but all of those storage compartments on the side would be really nice...
I've always wanted to do that my my wife doesn't like the idea of a hillbilly trailer. But my thought is if I get the bed from the same make and model of truck so it matches it would look nice.
Plus I'm thinking could have the same tires for spares and the gas tank for extra there as well.