The site is designed for manufacturers of
fiberglass vehicles and sports equipment ... but the Valspar site has a great gel coat troubleshooting and repair guide.
Might be a starting point for some of you, restoring older trailers.
Interesting reading for the rest of us.
http://www.valsparcomposites.com/tsguides/...trguidelist.htm
The hot link is to the troubleshooting page.
To access the gel coat repair area, you have to click on the gel coat repair button near the top center.