High on the Mountain Top
Join Date: Jan 2004
Location: North Vancouver, BC, Canada.
Interest: Mountain biking, hiking, nature photography, astronomy, music...
You need to leave the GPS on if you want to map your hike as a GPS track or if you want to record your elevation profile over the duration of the hike. If you just want to find out where you are, you only need to turn the unit on at that point. Get some good recahrgeable NiMH batteries. Otherwise, you'll be spending $5/day on non-rechargeables.