INTERLUX 2000E
I did the same thing as Ed below, but put 5 coats on my keel, 3 on the hull. I had SERIOUS rusting on my keel for years. Took it down to bear metal (on all rusts spot), applied 2000. Just hauled last week after 6 months - not one spot of rust! Read up on instructions before starting - critical time limits between coats. Even with 3 coats, need about 3 days of warm, windless weather to get it all done. With 2 coats of CSC, costs me about $700 for paint.