I have a 15 ft. aluminum v tiller model with 25 hp. When I am going through moderately rough water and cannot get up to full speed to be on a good plane, I take a bath. I have been told adding a hydrofoil will help solve this problem. Does anyone else agree and any suggestions as to which one. I have seen only two makes in catalogs, Sting Ray XP Junior and SE Sport's sport Marine Hydrofoil. I have already moved as much weight to the front as I can.