Sorry if this is a bit off topic but I'm wondering what people use to clean their boats. Specifically fiberglass gelcoat boats.

Our "new" 1991 Arima has quite a bit of dirtiness or stains in the off-white gelcoat. I've tried everything from a decent boat wash soap to household cleaners but haven't found anything that works.

I'd like to try to restore it to a like-new condition. Does anyone have any good suggestions?

Thanks!

Brazin