It's good that you have an accomplice.
Here's my solution for a trailer but not with a rectangular plan.
With your sidewalls, you could reduce it down to a ¼-circular arc. Hoop and canvas or metal.
Quote:
|
I'm planning on a tailgate type access panel or maybe french doors for the rear with a minimum size of 36 inches wide by 24 inches tall.
|
Split tailgate? That would lend itself to a boat tail or box cavity.