I had the same problem with my Coho and Arctic Tern 14.I put a Redfish seat in both and now can paddle for hours with no discomfort.The seats do not raise your center of gravity and fit in the boats very snug and secure.Everyone that paddles my boats comment on how much they love the seats.I spend a lot more time on the water now that I'm comfortable and that's A GOOD THING.Going to sit in one of thhose seats for a few hours now. Robert