In Northern MI if you happen to be hunting over a bait pile, as soon as deer past 1.5 sees it. The deer, buck or doe start looking for you in a tree.

I do agree with Huntinson, this is not rocket science. Get to and from your stands without spooking any deer. Set up Sanctuarys for the early season. Do not hunt these areas. I takea couple does each year.

Second thing you have to learn is what your neighbors are doing. Your neighbors will effect deer movement. You can be as sneaking as you want, but if they are running deer all over the place it willmess with you. I have learned to use them to help me. I have several stands setup for the second and third week of hunting. This is when I believe the deer know they are being hunted in my area. I try to use my neighbors blunders tomy advantage.

While you may begreat at not spooking deer and chasing does all over the place, your neighbors may not be.
I do agree with buckeye, we can and do "train deer".