Like GroundHunter I use my GPS to track the property lines of my lease. See maps on my web site http://www.racksnspurs.com/

It will save you a few steps when dragging a deer out. The shortest way is never the way you came in. With ExpertGPS software, you can also overlay your tracks & property lines on arial maps as well as topo maps.

When scouting if I find a good looking spot, I mark it with my GPS and it's easy to find again. I can also find the best way to the stand site.