Cheers legend,
So as long as your course has enough way points, you should know pretty quickly if you’ve gone wrong?
If, say, I downloaded someone’s .gpx file of the SDW, if I took a wrong turn, I’d see the arrow pointing off to the left or right when the trail I was on was pointing a different direction?
How close are the waypoints/breadcrumbs on a gpx file? Does it depend on the model of GPSie that made it? Or are they plotted by the user as they go?
Thanks again!