Hello,
I would have to agree with all the excellent posts above.
I would add this sometimes very deceptively hard rule of mine to follow: Slow down!
Keep the rush-rush of modern life at home: Deer are not on a time clock and are only concerned with staying alive. They are keyed in to the rythmns of nature and become instantly aware of all disturbances in thier perceptive range. The bowhunter needs to tune into these natural rythmns as soon as he/she enters the world of the whitetail, if he is to expect close encounters with undisturbed deer on a daily basis.
Key elements: Use slow and deliberate, conscious, movements when hunting -- at all times. (That is, move at the pace of nature, not ahead of it and never make an unconscious movement or sound!) Keep any noises you must make sounding as natural as possible. And, pretend a big buck is hunting you! (This last idea may seem silly, but try it. I think you'll find yourself with an increased level of awareness of your surroundings at all times!)
Ignore the rythmns of nature and proceed at a modern-world, homo-sapian pace and you will be a rock in a calm pond, sending ripples of alarm to every living creature! (I would venture to bet that besides not always using the wind to one's advantage, that moving like a "civilized man" in the woods has saved more whitetails than anything.)
Good Hunting....Raven