505 has problem as well ... I am thinking that the cleat/winch combination for the main halyard appears to be the biggest strain on the deck there and causes the problem re fatigue.
There is another thread on this part of the deck somewhere. Starboard seems to be the problem side.
This may be the #2 problem core area after the exhaust.
am scheduling those two areas for rehab off season. I am thinking instead of core to put a 1x6 strip of G10 sheet.
