Join Date: Apr 2006
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Canoeman, I wish you had asked a SIMPLE and NON-CONTROVERSIAL question like "Which is the real god?"
Everything else aside, the question of which bottom paint is best is going to depend on:
-What grows in your local water
-What the chemistry of your local water is
(Salty? Acidic? Basic? Lots of runoff?)
-How you use your boat (out often? Slowly? At speed?)
-How fast, or is there, local current or tidal action?
And if you get a chance to play with those variables in a lab, I'm sure you could determine "the best" single paint for any one set of conditions. The problem is, the real world tends to differ from the lab. The best advice that I can think of, is to start by finding local sailors, who are in your waters, who have spent years trying different bottom paints in them. Start with what they've found works, then experiment once you have a baseline to compare with--if it isn't working well enough for you.
Spraying or rolling and tipping will give you a faster smoother bottom if you are racing. But, if you just want to sail, you can roll most of it on and that will work well enough. Anything else means twice the labor (or hands) plus some learning curve. By all means, try for the smoother bottom IF you don't mind investing that time.
If you don't know what the old bottom paint is, there are limits on what "might" stick on top of it. You may prefer to strip all the old paint off first, so you're starting with a "known good" clean start, and many years less paint to drag around. New boat, new start on the bottom paint. Why not.