Do these help much with holeshot and can you stay on plane at slower speeds with one? Kids are a little young yet to be whippin on the tube and can only take about 15 mph and dad dosen't like luggin the motor and burnin all that fuel pushin water. I've reduced setback from 15.5 to 11.5" and set the hyd plate so the prop shaft is dead even with the pad at the top of its stroke. That lets me bury the prop 3.5" below the pad. Might have to get a 14' alum. boat with a 15 hp till the kids can handle it. Thanks in advance for any and all advice. Stace