No problems with GPS navagation.

You just plots the segments of your journey and retrace your steps.

Yes if your batteries go bad you have problems, but GPS is great on getting to your deerstand in the predawn or returning at night. You gotta have batteries for your flashlight so why not carry them for the GPS too!!

GPS problems usually come from those not familiar with initializing the units in a different hunting region and inadequate recording of ongoing trip segments.

I think GPS is great!