My neighbor has a jet boat with the typical porpoising problem. He only is a recreational boater. He does not want to work on the bottom of his boat or spend the money on a place diverter. Boat is all stock 75 Sanger Super Jet with a stock olds. Can he just install a set of cast trim tabs, the kind that are about 5x12 inches with the nut and bolt on each side, set it one time and be good to go...also where can he get that type of trim tab..