hi from Yuma, az
Hi, Bob (from the White Mountains)!
This site is actually about ALL-molded trailers ("egg" trailers) in which the entire frameless cabin is formed in (usually 2) large molds.
But you should be able to find some good information about maintenance and restoration of fiberglass gelcoat in old threads. The "Site Seach/Google" option in the Search menu gives the best results.