Boat plans catalog – 300 boats you can build! boatbuilding supplies & epoxy; inboard hardware; new – electrical design plans; books, dvd’s & audio. The dyno jet utilizes the popular jet pump powering system. there are plenty of "jet skis" that have suffered hull damage but the propulsion system is still in good. Didi sport 15. build yourself a mini sportboat ~ economy of plywood ~ modern radius chine hull with topside chine ~ stitch & glue cockpit & topside chine.