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237SD Trolling Motor Size

Tomr Member Posts: 1
How long of a shaft should I use on a 2006 SD for a Minn Kota Ulterra auto deploy. 


  • cjjjdeck
    cjjjdeck Member, Moderator Posts: 1,872 ✭✭✭✭
    The propeller of the trolling motor needs to be able to drop a minimum of 12" below the water surface.   On my 2012 SD237, I went with the 60" shaft to attain this criteria.  It's best to be on the water to go through the measuring process.  You will need to measure a distance from the surface of the front deck (where you have decided to mount the motor bracket) down to 1 foot below the water surface to determine proper shaft length.
    Below is a graphic from the Minnkota manual explaining depth criteria:

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