If you have 20-50 hunters, and you do this study across 5 years or so, at an average of 100 hours afield per year per person, you’ll get an extremely useful data set.
Things that matter:
Precision of gear/technique assessment. Accuracy not as important. If you know exactly what the person’s routine and gear is, it doesn’t matter what it is. So long as you have a precise measure of it.
Precision of hunting scenario assessment. Wind direction, temperature, humidity, deer approach direction, distance, reaction, etc. there’s probably 10-15 categories you’d want to capture.
Getting a thousand or so of these entries, across a wide set of hunting locations, times, weather conditions, pressure, etc, will tell a very useful story if analyzed properly.
I will gladly contribute to the “I don’t do scent control, and will report my findings as the control” haha.