Trolling motor interference

I went out with a buddy this morning and while operating the trolling motor I noticed the depth reading on the HB 565 with a TM mounted transducer would go crazy - but only while the motor is running. As soon as I took my foot off the button, the display settled down. The transducer is mounted on a bracket off to the side of the TM shaft. What can I do to remedy this?

First thing is make sure you are powering it from the starting battery and not the trolling motor battery. If you still have problems check out this sticky. http://www.crappie.com/crappie/fishi...-interference/