The Hobie 8 in. Twist and Seal Hatch is the standard hatch on Hobie kayaks. Older models can easily upgrade to the twist and seal. The twist and seal is a unique mechanism that allows for one hand operation and it ensures that the hatch is sealed. The hinged lid keeps the hatch lid with the kayak at all times and the rubber gasket keeps the hatch dry.
Recently I purchased two Hobie 8" Twist & Seal hatches for a boat I am building. This boat is a Wharram Tiki 26 catamaran which is almost more kayak than sailboat. I had searched the web for a suitable 8" round hatch. These by Hobie fit the bill. Ordering these hatches over the web from Austin Canoe & Kayak (ACK) was a very positive experience. The shipped them the same day and they arrived ahead of schedule. The best part was ACK's free shipping if you buy over $50. When one of the hatches arrived with a manufacturing defect, ACK and Hobie took care of it right away. These guys are totally service oriented. The hatches will be installed in the next couple of weeks so to see pictures go to http://tiki26.blogspot.com. Thanks ACK!
If you are thinking of purchasing this hatch for a Hobie Kona, go for the 6" hatch. You can get it with a dry bag that is not available with the 8" hatch. This hatch works well but, barely fits on the kona.
buenisimo el producto y el cervicio
Had more trouble finding SS screws than I had with the installation. I must say it is a leap of faith the cut a eight inch hole in your new boat.