Stitch-and-glue construction, along with the development of epoxy and modern mahogany marine plywood, has revolutionized and revitalized wooden boat building. this.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins.. Quad copters with aerial photography capabilities are the latest rage. these "drones" tend to have very stable flight characteristics and.