Watch the wind and thermals. The deer will bed where they can take the most advantage of the wind while still keeping a close watch out. Usually the wind will be over their back. In the morning the rising temps will cause the thermals to rise and often swirl, as temps cool, the thermals will drop. If you are hunting the side of a mountain, your wind is going to be your biggest problem. Try not to educate them too much, they won't tolerate alot of being bumped. LOL