Tracks and droppings. I've been scouting the river bottoms of northwest FL and northeast AL. Too hot and humid to get too far into the thick brush and too many cottonmouths and diamondbacks in there right now and the deer stay in the thick brush for shade. My serious scouting will start around late Sept or early Oct. I can hunt until the end of Feb and the patterns are completely different when it cools down so it is a waste of time to do a lot right now. Deer are pretty much nocturnal in this area when it is really hot.