Good information. I was a instructor in the military for a while and land navigation was one of my strengths. With a good topo map and a lensatic I can find myself out of most anywhere. That is if I can see. Reading these posts its appearant that they may be situations in which seeing your surrounding might be impaired. A snowstorm for example or just a stalk that ran late. Its very easy to be a few hundred feet off your mark even when following a compass when the azimuth your following is miles long and you have no visablity. I think I will invest in a decent GPS for a backup myself. This isnt my thread but thanks for the heads up guys.