[bristol299bob]

I'm no so sure that the particular choice of hardener and filler will matter all that much in this case. I generally use #105 resin, #205 hardener and colloidal silica (406) filler because that's what I usually have on hand. But there are lots of alternatives.

Maine sail has an awesome write-up: Sealing Deck Penetrations to Prevent Core Rot Photo Gallery by Compass Marine at pbase.com