RE: Wind?
I think Huntingson meant to say "downwind" instead of "upwind". You need to analyze your terrain, and where the animals are going to travel from then make a plan to keep the wind blowing from them to you, which can be a real serious PITA in mountainous terrain. Other than that, I've never seen an animal purposefully travel into the wind unless they were approaching a food source or another animal/decoy they want to check out.