I've done a couple of our keels (over the years they get worn down from hard trailering and grounding)...just ground it down till I got to good glassand feathered it out (sometimes I've had to apply a lot of acetone because it helps get out some of the moisture as it evaporates fast) then laid up 1708 on a piece of wax paper upside down, with progressively larger patches (think of it as building a small mountian) then apply it. The rest of the areas, I'm not sure.
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