I had this exact same problem with my H16 last year. When I was installing my deck ports, I used a can of foam to fill the delaminated area instead of epoxy, because it was about 3 feet long and almost as wide as the deck. Check out my prior posts by clicking on "HoldenBeachin" at the right then click "show all user's posts". It is another option. Good luck!
Mark
H16 sail # 19857