Thought I'd share the same info I posted on the Trailer Sailor Bulletin Boards.
Found plans for an Origami style folding dinghy made out of CoroPlast - a 4 mm corrugated plastic 4' X 8' sheet available at graphics shops in several colors that is WATERPROOF, LIGHTWEIGHT, and FOLDS WITH A "LIVING HINGE" thousands of times without tearing.
Transferred fold lines from plans.
"Scored", creased, and folded darts to form the hull with stainless bolts ultimately holding darts permanently in position.
Added top edge wood stiffners and cross member supports with panels.
Added 1/4" plywood floor for strength.
Decided on early sea trial, (with kayak paddle cobbled together since parts for final paddle still under construction), to decide whether or not to spend more time , energy, and dollars to "finish" it off properly.
Although somewhat "tender", requiring careful entry and exit, once I sat down and lowered my center of gravity the boat felt reasonably stable for such a narrow beamed vessel. It handled well with makeshift paddle. Decided to "finish" her off properly.
The next two photos speak volumes as to why the design appeals so much to me.