I like the link version, just for the follow the contour function.
You must fish some featureless lakes!
I couldn’t use it because it doesn’t care that there is 100 boat docks in the “contour line”, or tree stumps for that matter. I did use it a few times. I just couldn’t stand the constant corrections it made to the course.
Did I mention boat docks! Hahaha the thing would literally RAM a dock if you let it.