The latest issue of Good Old Boat Magazine published a letter from Robin Benjamin, who claims a paint called COPPERCOAT is the solution to this problem.The author had his Pacific Seacraft Dana coated with it and swears by the stuff in this Blog .
I've been thinking about hauling my boat home again to re-paint the deck and cockpit areas, as the gel coat has worn thin in places. It would also be a good time to strip and re-paint the bottom, again, this time with COPPERCOAT. The extra expense would be more than offset by the longevity of the product.