I have had a Mamba 7.6 for several years. It kept leaking water- about a gallon after only a couple of hours paddling. I tried tightening the screws, putting marine glue over the exposed hardware checking for leaks by filling it up with water and several different sprayskirts - nothing worked. Finally I bought a Immersion Research Klingon bungee sprayskirt- you need to buy the extralarge rim size-the smaller large is too tight to get on without help. Now the kayak is bone dry.