Follow Mode Losing track at slow speeds

Is there any detail on what exactly each setting does in follow mode? Also, I am using this to me on a stand up paddle board, moving extremely slowly. With some stops, I need to get to track on my pretty closely, the drone seems to lose me and the reposition, if I keep living fairly quickly it seems fine, but the slow moving and stops are causing it fits.
Thanks for any advice and help

For ‘Heading Mode: Course’ to work, the subject must be moving with a speed of at least 1 m/s.

In your case you should set ‘Heading Mode: North’

You can find all information here:

And some explanotary here:

Thank you, that was very helpful. I will make some adjustments and see how it goes.