For those that use GPS, what is your strategy for battery usage? In shopping for a GPS, I noticed that even the best battery life among units is stated as ~24 hours.
If GPS is powered on and tracking position while you hike at all times, it seems that one would have to carry spare AA's on any trips longer than 2 days. Is this what everyone does?
Or, do you keep the GPS off unless you need to verify position? If so, how often do you power it on, and how long do the batteries last in this manner?
Any info appreciated.