Is there anyone connected to the 18 square world that would know where to find inactive boats, sails or parts? I would love to find who and what is out there.

There's several of us along the Gulf Coast. Mike Coleman's Square Pages has some folks listed, but he's not keeping the contact info current:
http://www.geocities.com/mec_coleman/18square.htm

Right off, I can think of an entire Square that I believe is still for sale in Mobile AL

sea ya
tami

there are a couple of active 18sq's on Lake Norman in North Carolina.

Post a wanted ad in LNYC's classifieds. Their multihull fleet knows about almost every 18 sq. boat or part that comes up for sale. I think there might even be one or two boats for sale at the club right now.

http://www.lakenormanyachtclub.com/forum/forum.asp?FORUM_ID=11

There's an inactive 18sq at the SSS in Sarasota, FL.

I've been debating between buying that, buying an old Tornado I've seen listed for sale, and just fixing up and keeping the G-Cat 5.7M.

I have a bunch of stuff left over from a crash
that left my starboard hull on the bottom of a
lake. New mast, Smyth sail that needs a bit of repair,
couple of rudders and thier castings, daggerboard,
new shrouds with trap lines, cross beams, trailer, catbox.

e-mail me at mrklogan@AOL.com if your looking for
any of that stuff

I tried to discuss sale of that unused, untouched 18SQ at SSS several years ago. No response from owner, no interest.
Bought a light little A-cat! Better off!

decarls- I had the same experience, got his number from the staff and got no response from my calls to the owner.