I remember reading an article where a guy got permission to hunt this ground that had this really thick swamp, where you couldn' t even see far enough to hang a stand in. All the deer were nocturnal and he wasn' t allowed to bring anyone else on to hunt. Well, he went to a flea market one day and found a bunch of wind-up alarm clocks and he made a bid on the whole lot and got them. Went out the night before and strung them up, in several rows throughout the thicket. Next morning, when it was full light, the furthest row of alarm clocks went off. Five minutes later, the next row, then the next row... He ended up having a lot of deer sneak out past him.