Our tiny titan is an 8′ mini version of competition boats that will provide real excitement for the kids with low powered motors. building one is simple and requires. Boat plans: the pro tunnel is an 11-foot tunnel boat for gt pro racing or motors to 40 hp.. Here are the plans for the jae .91/1.01hg boat! once again this boat has been tested and is ready for the rc hydro battles. there is no performance difference between.