Here's a premature "Welcome to Knoxville!!" I've only been at CYC since October, but it strikes me as being a great club. Mast up storage for you 18 shouldn't be a problem. We all store our boats on our trailers in the yard and we have to pull them a short distance to the catamaran beach. There are no powerlines to worry about, so we just tow them slowly with the masts up.
There's a few guys that are regular catamaran sailors, and a bunch of cats that don't look like they are ever sailed. Hopefully we can generate some interest this season.
I'll send you a PM with contact info.
Mark Van Doren
Division 9 Chairman