Thanks FJ. I'll keep the Armstrong hatch in mind. That is actually the one I was looking for but couldn't remember the brand. Anyway I just took the new gasket off of my old Tempress hatch and custom fitted it into the track around the frame of the Bomar hatch which has the gasket under the lid. I now have a seemingly watertight double gasket seal. I just filled the splashwell w/ water and and let it sit for about 5 min...no leaks
Dan
Dan