Stingray Classic 2 Senior Hydrofoil The Stingray Classic 2 Senior Hydrofoil offers three levels of lift while fitting mot 40 - 300HP outboardssterndrives. The drag reducing wing texture helps reduce drag while offering improved holeshot to get on plane quicker. Keeping the boat on plane at lower speeds will increase your fuel economy. By reducing or eliminating cavitation, chinewalking, and porpoising the Stingray Classic 2 Senior may help increase your top end speed while offering a more stable