[MrRobalo]

As far as using fiberglass , that is what I will be using as I can get atLowes 48” x 8’ Panel @ $ 59.00 and split down the middle. Fiberglass can be brittle but if you use a sealant up against the plastic panels and use aluminum self drilling hex heads screws To attach into the frameworkIt will be VERY RIDGED (and it mite chip) but it will take more than a rock to penetrate through it. The bilateral strands infused in the resin is very strong and when it is backed up with another panel you should have the protection needed.
I want to at least get to go use are new BULLET camper before starting on a PROJECT this big BUT I want to get a jump on this to protect our investment. Being from the boating business and curiosity getting the best of me I will crawl under it soon take a few pics and draw out a game plan. The outward edge will have something to screw into and I would use either L shaped or 1/2’ square aluminum to brace the inner edges and screw then into framework running fore to aft.
I don’t want to come off as a know it all or smart a$$ but this was my career and have done and seen fiberglass used in many different applications and repairs over the years. I actually would have loved to have a fiberglass camper but want to see if we will love camping as much as boating and go from there.