August 2, 2009 05:43
Yeah, I saw that in the manual after making my post, although that one brief comment is the only reference to it in any of the documentation. I can understand if you're still, but if you're moving the gps can calculate it as well. I'm still trying to figure how some of the other radar/plotters get away without compass input. That being said I never found the overlay screen that helpful.
Scot
Scot