> I read about using saran wrap and vasaline to make a perfect seal around
> the hatch cover along with marine grade caulk. First off, I was laughed at
> at the drug store when I walked out with just saran wrap and vasaline,
> next time I will buy them separately! Second, the saran wrap was
> impossible to get to lay perfectly flat so I just coated the whole lip
> with vasaline and put the caulk on the lip of the hatch then I sealed the
> hatch. The caulk doesn't stick to vasaline so the saran wrap isn't needed
> and the excess caulk ooses out the edges filling in the gap between the
> hatch and the deck making the hatch even more water tight. What I really
> like about this method is that I only had to build a lip for the hatch to
> sit flush, I didn't have to recess the lip then build it up with foam
> sealer. Anyone else try this, was yours water tight?

This is a good idea. It is similar to a method of making a tight seal on Piper aircraft doors which are notoriously hard to seal. I might do this on my Coho.