Just another tip, that a AG Talk member mentioned a year or 2 ago:

When you first arrive in a field and select that field, make sure you drive forward FIRST, and this gets the arrow "pointed the correct direction"

Note: If on a slight hill or slope and you accidently roll 6 inches backwards, then the arrow will probably be wrong. (I pull in a field, and head downhill, then select my field, on my Integra screen. = but I do have the arrow available, as mentioned earlier, as an option.)