Good advise by all. Crosswind is my perferred method. I usually hunt alone and know I lost more than my share of yotes that came in downwind, that I did not see.
That's why I generally use an ecaller and put it out front of me, and I sit downwind when I hunt alone.
When I have a partner, I use hand calls and he watches the backdoor. /ubbthreads/images/graemlins/laugh.gif
Brad says it best you just don't know what they're going to do sometimes.