madjack wrote:Jon, it would probably work but seems a lot of expense and work...as far as stiffening the floor and trailer as a whole, it is hard to beat a sheet of ply or a composite floor...also a properly constructed tear, becomes a "torsion" box and the floor is an integral part of that box...with a utility trailer, the strength is in the frame...with a teardrop, the body is many times stronger than the frame...of course one of the nicest things about these little campers is building them yourself and by doing so, you can pretty much build them the way you wish.......
madjack

hmm one way to include the torsion box design would be to make a frame of 1x1's and that way they can drill and bolt the sides to the frame.
This would alsoallow the actual frame of the trailer to retain its strength by not having a bunch of holes in it (bend points). For the insulation they could use 1" foam in there and put a layer of a cheaper metal on the bottom that would help the temp thing a bit.
One thing about this design that would be annoying to me would be the trampoline type popping thing inbetween the support beams when it flexes and pops when weight is put on and removed. the way around that would be to use a thick enough sheet to prevent it. but that would eliminate any cost advantage.