Clark craft offers hundreds of boat plans, design patterns and complete boat kits, and a full line of boat building supplies and accessories for the amateur boatbuilder.. Classic boat hardware. why hunt and search and waste valuable time looking for the classic hardware you need for your old or new boat. we have the items you need in. The oldest business of it’s kind. since our first plans were sold for home construction in 1938, more than 100,000 hartley boats have been built..