This would be a new feature that we might want in the future. Just recording the ideas here, please don't do anything yet.
Instead of showing the arrow within a certain area only, it could be shown with different criteria:
the arrow is shown anytime after the criteria is met, that is: it never turns of again
the arrow is shown after the participant is outside a circular around the endpoint of the outward reach, let's make the radius of the circle small: 10% of the home-target distance
This would be a new feature that we might want in the future. Just recording the ideas here, please don't do anything yet.
Instead of showing the arrow within a certain area only, it could be shown with different criteria: