This isn't always true but its a start. While searching area's for buck rubs, if the buck rub is facing the food source (like corn, beans or alfalfa) the bucks are using that trail in the morning, coming from the food source to the bedding area. If the rub is facing away from the food source they are using that trail at night from the bedding area to the food source. I've used this and it has work for me in the past. Good luck everyone