Has anybody here ever participated in a cardboard boat race? Some of us are signed up for one here in Key Largo tomorrow. The "regatta organizers" provide cardboard, a roll of duct tape and a paddle, and you have to build a boat in about an hour or so.

It has to be able to carry two people out to a buoy and back to shore (hopefully without sinking).

Any suggestions on what to do and not do?

I'm thinking a sail and hydrofoil leeboards. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

Do you think it is possible to build a catamaran out of cardboard?