When using a tree seat or any time i want a tree to lean against, I look for a cluster of three trunks and try to sit so that I do not get outlined when the deer come in from the wrong side. Funny how they don't cooperate that way. When hunting on the ground one needs to be aware of what the wind eddies are doing exactly where you are at. Wind blows in circles, almost like the woods breathe. Even when a breeze picks up and the air currents seems to flow steady, when they back off those currents turn into eddies and any deer that gets too close will smell you. When a deer is getting close, look at the deer in your side vision and examine the tops of your boots very intently. Don't look at a close deer until you are ready to shoot it. Then, at that time, get on with it. Deer will pick up very small motions, I have found that a very smooth shot from the bow in a low position pays off with a rather smooth quick shot. Getting trapped holding the bow up forever, while a deer makes up it mind whether to take another step, can burn up your shoulder if you are trying to hold a bow in the air for a long time.