I can't take credit for discovering this product... that goes to Brian (SIU Bound) from the forums. Here is a Link to the thread
I've been investigating options for the floor replacement in our trailer. Nyloboard looks to be the perfect Airstream floor material. It is made from recycled nylon carpet. It's available in various thicknesses from 3/8" to 1" and comes plain or with a fiberglass skin on each face. It also is available in 8' widths up to 24' long. Imagine a 26' trailer with a one piece floor! The 3/4" fiberglass skinned material sells for about $4.50 a square foot which is comparable to mid-range Marine plywood.
So far this is on the top of my list... that is, if I can get (7) 4'x8' sheets shipped to WI for a reasonable price.