Matt,
I have that looked after. The whole package is covered from the elements by a custom canopy over top of a Hobie cover.
Nick,
I use 6 containers of the stuff you`re talking about (made by Starbrite) every year on my other boat. It`s great stuff, but you`re right - it would only work inside a Hobie that has large access ports. It does keep the air dry and prevents mildew. But, it is not a substitute for drainage.
I think I will go with everybody`s suggestions. I will drain as best I can, then let the remainder freeze.
I am just glad to have this resource (catsailor) whereby I can get the answers to my questions and feel comfortable with my concerns.
Thanks to everybody - as always.
Dave