Hi, I owned an 18 square way back in the 1980's. I'm assuming you're talking about the same boat; single hander with a giant main and widely spaced hulls (don't remember how wide, but it seemed bigger than 8' 6"). This boat was a riot! The only thing faster on our little lake up here in Canada were the Tornado's (which is what I have now). I know from info gathered on this site that there are some interesting new boats around (single handed with spinnaker, etc.), but if you have a line on a used boat, I don't see how you'll regret buying it.

Cheers

Al