How To Prevent Your Boat Motor From Scaring Fish

fishing on riverFish respond to sound in various ways. But most savvy anglers will agree that loud noise, vibration and movement are more likely to scare away the fish you desperately want to catch. So when you fish with a motor boat, it is important to know how to manage the sound of your trolling motor so it does not end up sending the big predator fish far away from your reach. Here are some tips that will help you to stop spooking fish with your trolling motor.

Use a Four-stroke Engine

Two-stroke engines produce a lot of noise and vibration. They can be heard by fish hundreds of yards away, especially when you are fishing alone. These engines are cheaper than the four-stroke versions so many anglers purchase them to save cost. However, if you want to increase your chances of catching fish, you need to use a quieter engine. Preferably, you should opt for a four-stroke engine that will create less noise and vibration.

Shut Off the Engine Early

Apart from using a quieter engine, you can also cut off the noise of the trolling motor before you get to your fishing spot. Instead of moving right into the area with the loud noise, you can leave the engine in gear and then turn off the ignition. Then the boat will drift quietly towards the position where you want it to stop. If you are planning to fish in shallow waters, using a stealth approach will keep the water calm and quiet.

Reduce Propeller Noise

Propellers make one of the loudest sounds below the water. This is true of both electric and gas powered trolling motors. The noise produced by a propeller is directly linked to its speed. So you can reduce the noise made by this component by decreasing your speed. In addition, you may muffle the noise by using shift-dampening propellers. This relatively new device helps to cut down the noise and vibration produced when you perform a gear shift.

Use a Large Diesel Powered Vessel

The sound and vibration of large diesel powered vessels tend to attract predator fish instead of scaring them away. Although there are not many scientific experiments to reveal the actual reason for the attraction of predators to the vibration of large swinging propellers, most people who have used this type of vessel know that this is true. So if you have the opportunity to lease or buy one with large inboard diesel motor, the vibration produced may attract more large fish than you can imagine.

Make Sure Your Trolling Motor Is Charged

If you need to stay in one area while fishing it is best that you use you trolling motor instead of your main engine to fish. Having a well charged trolling motor battery will go a long way in making sure you do not scare away some sensitive fish.


The tips provided here will help you to stop scaring away fish with your trolling motor. However, you still need to experiment and determine what works for you depending on the fishing spot and the type of fish you want to catch.