Not to derail the thread, but I have wondered how your tops were holding up - and your trailers! I have browsed through your threads from time to time and do enjoy seeing what you come up with. My only experience with fiberglass was repairing the chainplates as well as some crazing on the hull of my sailboat several years ago. That is why I figured aluminum would hold up better. I my defense I did preface my post by stating I am far from an expert, I have just done repair not full-blown fabrication with fiberglass.