To add to Kmoose: Flex in a boat is tricky. My Seafari 25 had a structural problem probably caused by Potter removing some things Moesly designed into the boat. Its showed up in several 25s. Mine was made much worse by some rotten bulkheads. I fixed it, being very careful not to create hard points. Did not quite succeed. Sure enough, the hull found different areas to flex and after a few years I started seeing hair line cracks in the gelcoat. Fixed that this year, hopefully before it got serious. Give it a couple of years and I'll know if the flex just transferred somewhere else or maybe i really fixed it.
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