It seems to me that the deer on my place travel almost alway on trails. When they want to go somewhere, they travel on a trail in that direction, regardless of the direction the wind is blowing. The trails they use change as their needs change, some are used more heavily at certain times of the year, less so at others, but all irregardless of the wind.
I shot a buck in 2012 which seems typical of the way I picture the situation. As I walked in to my hide I walked the last 100 yards on a well used deer trail, and I had the thought that maybe I should have approached from a different direction. because the wind, although light, was blowing from behind me, and I considered the possibility I was spooking any deer in front of me with my scent as I walked in. The hide had a view of the last section of that trail, and shortly after I got settled in I saw a buck walking down the trail I had used, with the wind still blowing from behind him directly toward me. I've seen that sort of thing happen so often I thought nothing of it at the time.
Spence