I ran into this technology a few weeks ago and it looks fantastic. Basically upgrades your existing Minn Kota trolling motor to an iPilot without having to dish out a ton of cash for an iPilot motor and Chartplotter sonar.
https://pronavmarine.com/
A quick demo by Jay Siemens:
https://www.youtube.com/watch?v=1I7iw6v4SNY