Lastnight when I was walking back from my stand, I was downwind of two 6 pointers on and they just sat there and looked at me...one actually started walking towards me.
The only thing that spooked them was when I moved my arm, so i am going to say try to stay downwind of the deer if you have an idea of where they will be coming from, and use some type of scent killer/eliminator. I use a soap and spray all of my clothing, and it seems to work since he got within about 15 yards of me and it was just a breeze coming through. and he had his nose in the air the whole time.