The head is rotating too often, partially due to too much thrust (when Gain is set to minimum) for a light boat.
And seems it doesn’t know how to compensate the wind (about 4 mph), which was constantly blowing from the bow direction. It even tried to push in the wind direction.
It’s noisy, isn’t it?
Garmin still has some way to go!
A new one:
See the increasing distance difference?
This explains why the head is always rotating. In other words, the TM ALWAYS thinks there’s a distance difference even though there’s not!