Join Date: Aug 2003
Location: Long Island, NY
Thanked 51 Times in 46 Posts
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I redid my boat bottom in 2008, soda blasting off what seemed like 20 years of hard paint. After barrier coat with Pettit products, I applied 3 coats of Hydrocoat.
The Hydrocoat worked OK, but not great. There was a fair amount of slime buildup. No barnacles or other hard growth, but more slime than I remember from years past (on other boats, usually with West Marine CPP or something like that).
Last year I used the Pettit SSA (Single Season Ablative). It was cheaper than Hydrocoat and was supposed to be better at slime. It wasn't. The performance was similar to Hydrocoat. And, since it is single season only, it doesn't really cost less. Additionally, I have areas where it is flaking off the coat underneath (which is Hydrocoat).
This year I plan on trying SR40, which is supposed to be the best at slime.
I'm sanding off all the old SSA and getting down to my first coat of Hydrocoat. It's pretty easy with my sander.
Next year I'll update everyone on SR40.
BTW, my sailing area is the Long Island Sound, home port is Mt. Sinai. My boats gets used at least once a week usually 2-3 times a week for 2 hours or so.
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY
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