Open/dayboat, free sailboat plans hobby kat. everyone who digs boating has heard of the hobie cat, the sleek little catamaran that burst on the scene and captured the. I had the good fortune of being an exchange student bairnsdale australia in my teens. this was the home town of lock crowther. lock designed catamarans and trimarans. Cheap guitars, proas, sailing canoes, chinese lugsails, plywood boats, bamboo, tube amps, wanda the cat, odd sails from polytarp, this & that.