StarFire No-Drill Hydrofoil Stabilizer (Best For Top End Speed) For 40 For boaters looking to get on plane in half the time; reduce bow rise; eliminate chinewalking; stop porpoising and cavitation; while at the same time allow for maximum top-end speed and increased fuel efficiency.The world's first No-Drill hydrofoil with an optional drill installation feature. This allows boaters to choose which installation method they prefer - No-Drill or Drill..