Garmin Panoptix for trolling in Questions About Trout & Salmon Trolling? Posted February 19, 2020 I have an old Minn Kota transom mount electric motor. I have taken the motor itself off, and will mount the PS 30 on the end of the shaft. With mounted this way, I'll be able to rotate the transducer and still which way I like it best. Then buy the PS 31 mount if needed.