Boat plans for power, sail and small boats. free boat plans. boat kits and supplies plus the best boat building technical support.. Manufacturer of shallow water, catamaran flats boat with hand laminated fiberglass hull, patented catamaran design, and self bailing. located in rosenberg, texas.. Willy flats boats offers the finest flats boats on the market, our boats also make great skiff boats, poling skiffs, and bay boats for fishing & play..