Heddon Sonar - Heddon Sonar lures are the original action-adjustable lure. The three line-tie holes allow adjustment of the lures' running depth and action. The front hole is for shallow running and high vibration. The rear hole produces deep running and a wide, slower, wobbling action. The center hole is perfect for jigging, a technique especially effective for ice fishing. Three line-tie holes allow adjustment of the lureEffective for all fresh water fishing