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Epoxy repair for Arpege deck delamination?
I'm refitting an old Arpege 30 that has a number of soft or creaky spots in the deck and cockpit. I've heard that the boats have a foam core in their decks (not balsa) and have a history of delaminating due to manufacturing quirks. I've begun doing the drill-grid-of-holes/inject epoxy repair to fill in the soft spots, but I'm nervous given how often I've heard warnings against that technique. My assumption is that if this repair began to fail I could always rip out the deck/headliner and re-core it someday without delaying the launch of the boat another year. Is that reasonable?
Also, a couple larger cavities seem to have formed beneath the cockpit sole and starboard seat (can actually see/feel the non-skid sag under my feet. I would estimate each air bubble to be about a foot or so in diameter. If that's accurate, will there be a problem to have a larger quantity of epoxy underneath those sections? Seems to me that if I can just make the under layer rigid and durable I'll be fine, right?