Seriously, do you(guys that use this method), think there is that much difference in what you use?
Don't think, I (we that use this method) know.
I don't know what kind of terrain you hunt in Missouri but if you come here to Ohio(or most other hilly Northern states), bowhunt the hills and don't play the wind,most likely you go home with empty pockets. You'll surely not get a trophy.
If ya bowhunt flat or gently rolling terrain, wind is not that much of a problem as long as you set your stand with the wind in your face. You don't have to worry about crosswinds, sub-thermals etc.
Again, not always so hunting steep hilly terrain. I.E. Wind will riccochet off the steep hills causing crosswinds. If there's zero wind you hunt high in the morning cause the hill tops warm up faster creating a natural up-draft(one of the reasons big bucks travel ridgetops in the a.m. The opposite is true in the p.m. with zero wind. Hunt the bottoms cause the hilltops cool off faster creating a natural downward draft.
Add hunting out of a 20-25ft. treestand in this same steep, hilly terrain and that sometimes complicates things more. The natural wind may be blowing out of the West. You climb up in your treestand thats facing West, only to get seated in your stand and spray your ' latest and greatest deer hunting invention' only to find out that the natural wind is ricochetting off the east steep hillside wall and hitting you in the back of the head.
As far as just going out and killing a doe, its not hard to do that on an almost daily basis. Since I live in the middle of the woods and have deer(doe's,small bucks) in the backyard just about everyday, I can shoot one off the deck anytime while smoking,drinking a beer and listening to the radio. Two does literaly walked about 20 ft. from the swimming pool while my wife, grandson and I were swimming about a month ago.
I'm talking about hunting 150+ class bucks that play every angle to their advantage. You won't kill that quality of buck bowhunting on a yearly basis smokings cigs. from your stand and not playing the wind.
Also, tell your nephew to hang a pin feather or down feather from his bow. It will help with wind direction .