as far as when you know your over-hunting an area...if the deer movement slows down, if the deer act more cautious as they approach your stand, if you start getting more pics (on your trail cams) of nocturnal deer. if you are a weekend warrior like alot of people on here, your really wont over pressure an area...you hunt it saturday and sunday then it has 5 or 6 days to air out...if you start spooking deer every time your in there you can expect for your spot to go to h*ll in a handbasket...watch your scent and wind!