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Dolphin-Trolling Fin

Dolphin-Trolling Fin

Uncle Norm's Marine Products

  • $ 17900

Add No-Drill Clamp set? ($69)

The Dolphin-Trolling Fin gives you an edge on the water by providing exceptional tracking in wind and turbulent conditions. The fin triples the effective rudder area which improves your stability, increases your ability to turn and reduces the cycle time on your auto-pilot system. The Dolphin-Trolling Fin installs in minutes without drilling using the 45M-Clamp kit or bolt directly to cavitation plate using included hardware. Tested and approved by Alaska and Northwest fishing guides. 


  • 3x the Steering Control
  • 2x the Turn Rate
  • 3x the Effective Rudder Area
  • Exceptional Tracking in Windy and Turbulent Conditions
  • Reduced Cycling of Autopilot Units-Less Wear
  • Prevents cavitation and maximizes thrust



  • Black Powder Coated Aluminum
  • Designed for boat motors with propellers up to 10 inches in diameter
  • Compatible with autopilot systems
  • Simple installation
  • Patent Pending
  • Made in USA


No-Drill Clamp Kit (Optional)


No holes to drill when mounting the Uncle Norm's Fins with the No-Drill Clamp Set. Works on most outboard and I/O stern drives up to 300 HP. It's simple, fast and effective. Aluminum construction and powder coated for good looks and durability.

  • Designed to be Used with the Orca-Performance Fin and Dolphin-Trolling Fin
  • No Holes to Drill in the Motor
  • Machined from Solid Aluminum Bar Stock
  • Stainless Steel Hardware Included
  • Black Powder Coated Finish
  • Installs Quickly with Minimal Tools
  • Can Be Removed in Minutes
  • Simple Instructions
  • Made in USA


In Use Pictures

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Customer Reviews

Based on 9 reviews
Haven’t installed it yet

Let you know next summer

Michael, I hope you give us a review after you have used it and please send some photos.
Really seems to work!

I discovered the Dolphin at a boat ramp on a large boat similar to mine. I asked what it was and what it was for. It turned out we both had the same problem. With the kicker as a power source, our boats are being blown all over the place. Very poor steering control and a lot of over steering. The other boat's owner said the fin corrected all of this and was very happy. I went home and ordered one for my new Yami 9.9 high thrust. I got the no hole drill bracket also. Item went on in less than an hour, right before a trip to Tillamook Bay in Oregon. My biggest worry was it coming off and hanging up on the moving prop. They say 5 ft pounds. I checked and rechecked and then snugged it a little more! Tillamook Bay has a lot of flow and wind. Using the kicker, the boat (21 ft Luxor off shore with 150 hp Yami) now has much better tracking and better control of direction. Prior trip without Dolphin on Columbia River was really tiring. Constant back and forth with boat drifting and steering from one side to the next. Can't wait to go back and give it a try with Dolphin installed.


works great

Dolphin Trolling Fin

This product arrived with me in UK very quickly . I am delighted with it , it is very good quality and improves the handling of my boat considerably ( particularly at low speed) I can recommend this item and Uncle Norm's Product Team very highly .

Thanks Russell, I am glad that our fins did the trick for you. We don't have many of our fins in the UK yet but that is starting to change. Please send us some photos when you can.
Works great

Works great . I fish in a number of Sierra lakes which are usually windy. It has made a tremendous difference turning in the wind and keeping a straight line while trolling. Easy to install and works as advertised.