The New RMP Humminbird Mega SI Trolling Motor Mount.
This mount works with 80 pound trolling motors and above on the:
Minn Kota Ultrex
Maxxum Pro Trolling Motor
X5 Trolling Motors
It will work even if you have the built in sonar in your Minn Kota or Motorguide trolling motors that have the transducer mounted in the front head of the trolling motor.
These WILL NOT work with a front skeg trolling motor.