This is more of touring boat so it probably won't be rolled, well more than half way anyway.

The boat is 24" wide. The opening is a standard (at least I thought so) Ocean Cockpit. I debated a long time about what to do on this boat. I have tried keyholes and unless they are really large I can't get in them butt first. My knees just don't bend enough. And I hate long cockpits as it is hard for me to reach my water bottle or anything on the deck. So I decided on the OC cockpit.

Just measured to make sure and it is 16" x 20" opening. Isn't that a standard OC? Somewhere along the way I messed up on my form and it is actually 151/2" wide, but I am betting that is close enough. But if I wrong on my size, I can still change it now.