Have you spoken to Nacra? They will advise you.
the deck will need to be chiseled off and a repair made inside the hull
I don't think they know too much about repairs, actually I am quite sure they send their repair jobs to Hobiecat.
From personal experience I know they have some very skilled people there.
You might also give a call to Ruud Goudriaan over at
BNR Watersport, he is a helpful guy and also very good at any sort of repair.
