Jimbo,
I use a GPS so that I don't get lost in a few hundred miles of federal land. They really work well, BTW for the GPS mount do a search here, there is a company that makes mounts for specific dirtbike, I can't think of the name of the company at present. Anyway, go to www.Garmin.com to study and compare different models. Most handhelds have the ability to download maps from the computer, and you can upload your "tracks" or where you road to your computer map. Another extremely good feature, and most important IMO, is to set your postion (into the GPS) from your campsite or where you park. The GPS will point you in that direction coming back, give you information about how far you are from your camp and even tell you average and top speed. Just make sure you bring extra batteries, I've ran out of juice before and had to feel my way back.