Brian,
Good morning! On my Catalina I use biodegradable boat soap that is sold for cheap at West Marine and other boating related stores; it comes in a clear plastic bottle and is usually pink. It works, but I do have a problem with it: It is impossible to rinse it all off. I have spent hours on end rinsing and rinsing and the suds just keep coming; this means the soap dries onto the fiberglass fast, and if you don't rinse it right away, you'll be stuck with a bunch of lines and spots where the soap dried. This is solved by going back over the surface with a high-pressure hose nozzle or pressure washer, but as for now I've just resolved to magic erasers. I bought a few boxes of them, and they work great for cleaning off mold, dirt, algae, and scuff marks.
Hope this helps!
God Bless,
S.S.
Good morning! On my Catalina I use biodegradable boat soap that is sold for cheap at West Marine and other boating related stores; it comes in a clear plastic bottle and is usually pink. It works, but I do have a problem with it: It is impossible to rinse it all off. I have spent hours on end rinsing and rinsing and the suds just keep coming; this means the soap dries onto the fiberglass fast, and if you don't rinse it right away, you'll be stuck with a bunch of lines and spots where the soap dried. This is solved by going back over the surface with a high-pressure hose nozzle or pressure washer, but as for now I've just resolved to magic erasers. I bought a few boxes of them, and they work great for cleaning off mold, dirt, algae, and scuff marks.
Hope this helps!
God Bless,
S.S.