Iron Keel Painting
I had two coats of epoxy put on my new 28.5 in 1986 , then added 4 coats of Interlux 2000 about 4 years later. Every year I get 4 to 8 rust spots comming through and popping off the gel coat finish and the primers. I just plan on opening up these areas with a Dremel tool grinder and then have used various forms of ferous metal primer, then Interlux 2000 and finally the bottom paint. It's a constant chore every spring but it hasn't warranted taking down the whole keel to bare metal. I use a Baltoplate racing finish, so I'm pretty particular with the prep. It seems not to matter, as there will be 'new' spots somewhere every spring after she's been out of the water for the winter no matter what you use, but it does not afect the boat's performance during the season. You could always invest in a semi-custom lead keel, but why worry about it?