this happened to a buddy of mine about 5 years ago.it was opening day of bow season in georgia.it was a hot muggy morning.he had went out and bought a new GPS. and was bragging on how he would never get turned aroung in the woods again! we left the truck about the same time that morning about 30 min before day light. i reached my tree with no problem.but for my buddy he did not have that kind of luck.his tree was only about 2 to 300 hundred yards from the rd. we were on.he decided to use the new GPS to find it. he begain walking in the direction of the tree but some how the waypoint on the GPS keeped telling him to keep walking. he did untill day light" he was not sure what to do. so he keeped on going untill about 9.30am way past daylight. by the way he was carrying a treelounge on his back.and they are not light.very hot and frustrated.he finilly reached is way point on the GPS? he was about 4 miles from where he started.but was where he was the day before! next to some lake he had found.so he marked it on his GPS.when he realized what he did he sat down for a few min. then stood up and threw the GPS in the lake.he got back to the truck about 1.00pm and never got to hunt that morning