Re: Building/modifying sailing kayak?
There are a variety of generic rigs for kayaks and canoes. Google it. Some use outriggers for stability. Yahoo has a good sailng canoe forum. The WoodenBoat Forum has plenty of threads on sail and oar boats, a few on sailing canoes. I think CLC has kits for kayaks that take rigs. I think Hobie makes a kayak/trimaran. Happy hunting.