I have a Hunter 27 that I am re-painting this spring. I have a pretty good amount of black mold above the quarter berth. I dealt with mold remediation several years ago in my home and found that a 50/50 mixture of chlorox and water is effective in killing the mold followed by a Kiltz primer. I'm thinking of doing the same with the mold in the boat. I know that chlorine is used widely in fiberglass swimming pools and such, mixed with large volumes of water. My question is does anyone know of any detremental effects of applying chlorine directly to fiberglass or of some other marine product suitable for this purpose?