Re-gelcoat
Don't put any of that quick fix garbage like Island girl or whatever someone is trying to sell you on your boat, you might as well smear mop-n-glow all over your boat, I have been doing gelcoat and awl grip work proffesionally for years and gelcoat is alot cheeper, less prep and last alot longer. I don't know what has been applied to your boat, talk to a local expert, it may come off with sanding, any boat that has been painted is usually to hide something or in the cases around our area lack of knowledge in gelcoat maintenance. Email me if you have questions, xtreemcomposites@yahoo.com I am a female business owner, we do boat restoration every day, we recently took a 1985 catalina 27 with a 12 year old paint job and made it look brand new, without painting or new gelcoat or smearing any of this other junk all over it. There is no quick fix, when you do it the right way. If the coating on your boat is white, it may be paint that was not prepped right, if it is clear try some straight amonia.