Some very good points here.

I try to keep in mind how I react after I see the deer. Everything is in slow motion trying to get into position for the shot. Don't want to move too fast - can't let that deer know I'm here.

That mentality keeps me from making those quick/jerky moves that can picked up by the deer well before I know thery're in my area.

Some time I think we give the deer too much credit, but making that deer aware of exactly where you are by too much movement,is not one of those times.