derbyrm wrote:
What about the Gougeon Brothers' recommendation that the deck core be sealed
by boring the hole oversize, filling with thickened epoxy, and then drilling
the proper size hole in the epoxy; before the bedding and backing?

If you do this, you should try to make the first hole only
slightly oversized; if you drill away too much of the skin
laminations then your deck fitting will be attached to epoxy
filler rather than the deck.

A better way is to use a small angled tool to dig out the
core from around the bolt holes, then fill between the skins
with thickened epoxy. And use hi-density stuff that will
take the compression of the mounting bolts. Alternately, you
can dish out the skins and lay up some new cloth over the
sealing filler at the bolt holes.

Fresh Breezes- Doug King