Also note that a GPS whether in the vehicle or hand held may also be quite useless in rugged heavily treed terrain. They need a signal from a min. of 2 satellites to get a position and the more satellites the better and more accurate they are.

That's why I say, make your first method of orientation be your map. They are a whole lot cheaper than a GPS and are available practically everywhere. <img src="/images/graemlins/smile.gif" alt="" />