The ProNav Gen 2 compass is self-calibrating. You only need to calibrate it if MarkSetBot Support tells you to. Upgrade to ProNav 2.2.96+ before running this routine.
NOTE: Make sure the area you are calibrating in his flat and free of compass interference. Do this with a hand-held compass and verify the compass doesn't jump around as you walk an area. Grassy areas are usually a safe bet. This process cannot be done on an incline because the accelerometer and gyroscope are also calibrated during this process.
NOTE 2: Make sure you don't have anything metal on you while you are doing this process. Most likely problems are watches, rings, buttons on coats, and car keys.
NOTE 3: Have support remotely kick off a hard calibration routine or use https://app.marksetbot.com/pronavble (this only works on Android and Windows)
Hard Cal when installed in Minn Kota motor head:
Hard Cal when installed on MotorGuide motor head:
Hard Cal when not installed in motor head: