[alanw]

My side hatches freely leaked water as well. I removed the hatch frames and sealed them where they mount to the kayak. Much less water leaking now, but still some from around the lid seal area. Like you said, stress on the hinges is obvious from that seal being too tall and/or too hard, and the lid itself just isn't stiff enough to seal in the middle of the lid between the latches. I need a better lid seal, was going to fix it eventually as the leakage isn't so bad anymore.