Hello Paolo, I am currently using a Minnkota RT70AT/H motor. I designed the PWM electronics for it to use in my wet sub. I am not familar with the Motorguide except I know they also use a permanent magnet motor which is similar to a shunt wound motor. I can answer some questions from an electrical viewpoint. I hope you are considering pressure compensation. Good Luck to you and welcome, Ken Martindale/ EE