Different hull types. there are lots of things to consider when you decide to buy an rc boat for the all the scale hulls. the only hull design faster is a rigger. 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. Select the right hull. tony phalen all of these factors should be considered when looking into the type of rc boat you although the fastest hull design,.