The hull is about more than just good looks. the shape of the hull affects the speed, stability, and maneuverability of the rc boat. flat-bottom. Mean machine 2, same super fast hull design as the original mean machine, but with the updated racing inspired cowl. this fiberglass hull is a lightweight fiberglass. Free model boat plans – a compiled list to help you locate free model ship and boat plans for model building – static, scale, rc, power, gas, sailing, steam and.