I am finishing a Cheseapeake 16 and have only to install a dayhatch. The hatch is being installed on a somewhat cambered reardeck. I need to bed the flat hatch against the cambered deck and have some West Marine Silicone to do the job. I recently read, in some kayaking book, that silicone can anchor into deck and make repairs difficult (or some such thing). Also, I have seen "Mildew resistant" silicone advertised which infers that normal silicone will get mildewed. Nonetheless, the hatch manufacturer says to bed hatch with silicone. Does anyone have any opinions on this. I tried on some test wood a couple of other products (Life Seal and Life Caulk) and felt that silicone had the best durability and smoothness and just seemed better. Thanks for any input.

-Dave-