Doel-Fin is the original hydrofoil developed by an aeronautical engineer to improve overall performance on all boats with outboard motors or outdrive units. Molded in two pieces of guaranteed unbreakable, high-strength plastic, each foil is designed to flex independently to absorb shock. The positive effects include greater stability, consistent planing at lower RPM, faster out-of-the hole performance, better gas mileage, steadier turns, higher top-end speeds and lower bow rise at all speeds. Doel-Fin is designed for use with small motors, big motors and inflatable dingies.

For the Fisherman who thinks he has everything!
Slows even big motors down to that “ever-so-slow” fish tantalizing speed.
A significant invention in the sport of troll fishing, Happy Troller® mounts on the anti-cavitation plate to allow fine control of trolling speed. At cruising speed, your boat’s stability is enhanced.

Locks in “down” position for trolling.
Locks in “up” position for cruising.

Happy Troller® is the answer to correct trolling speed. Use it year-round in all boating activities; salt and fresh water.

Key Features:

• Reduces troll speed in “down” position
  
• Acts as a stabilizer in “up” position
  
• Maintains stability in bow-light boats
  
• Smooths out ride in rough water
  
• Reduces porpoising and cavitation
  
• Made of only highest quality stainless steel and marine aluminum; clear anodized aluminum finish
  
• Installs in 15 minutes
  
• Stainless steel mounting hardware and installation & operating instructions provided with each unit