Donna D., I think I'm confused about what I am asking. I thought the gel coat was a final coating on the trailer that made it shine and that you would have to apply a gel coat to it when the finish became dull but it must be another compound that brings back the shine. Kind of along the same lines of the Airstream (can I say that word here
), the stuff that makes it shine for those dedicated enough to keep theirs in top shape. So, I don't really understand fiberglass.