Key Skill: Use a GPS to Navigate Off-Trail » Pretrip, determine important navigational features, like a hidden lake or saddle, and their UTM coordinates, either by using mapping software or by taking the UTM coordinates from a map (see backpacker.com/skills/navigatefog).
» Load those waypoints into a GPS receiver. Also, if your GPS can upload maps, draw the route on map software, and then upload it.
» On the ground, when you’re approaching those key landmarks, hit the Go To button, for turn-by-turn directions to them.
» As you hike, identify terrain features on the map as well. Feel lost? Use the GPS to pinpoint your spot: Read your position coordinates, and then plot them on your map.