You can tell when it has been over hunted when you stop seeing deer or are only seeing them from afar. I have killed deer out of the same stand for three days in a row before. I never jack with the wind and am super snicky about getting in. If I get busted in a stand I won't hunt it for a good 2 weeks. If deer are looking up at your stand as they come in (and they will ) they are looking for you. I usaually hunt a stand morning and evening then move to another one.