how about a 60' planing hull catamaran designed and built by Yves Parlier. It even had steps near the stern like old-school hydro racers.
http://www.bowmansunion.com/portal/news/anmviewer.asp?a=501He's also working on a strange and interesting kite powered cat now.
http://www.parlier.org/beyond_the_sea/eng/index.php
