Aircraft scouting
I have seen small airplanes flying slowly around the mountains while I was either pre-season scouting and while actually hunting. I have not seen a drone yet but it is probably just a matter of time.
Some outfitters use this type of scouting for their clients. Some even advertise it. I think I have seen more of this in Wyoming than anywhere else but I have seen it in Colorado. This has been going on for years but now it seems to be more common and perhaps accepted.
Maybe this is legal, maybe it is not, but that is not my point. How proud would you be of a "trophy" that was taken with the help of an aircraft, even if it was just used for pre-season scouting?