Carey,
Check out HEMETVALLEYRV.NET they sell the pleated siding that Amerigo's came with. I'm not sure of the cost, but it would be back to an original look. :)
We do alot of fiberglassing at my work and there are several ways to patch. For holes, if you can get to the back side of the repair area, you can block off the hole with duct tape, scuff up the finished side and add the resin and let it set up and sand smooth. Where you have larger repairs, you need to use the fiberglass matting and several coats of resin to blend your repair....sort of like drywall repair in your house. I used glazing putty for auto body repairs to fill in the hair line cracks and imperfections, wet sand, primer and paint.
Hope this helps,
Dave