Tim, a "draw" refers to finger of a major drainage. Kind of like we would refer to a side canyon in Moab. Generally they have thicker vegetation due to water draining into them and more shade during the year. Most Elk and Deer will hide there during the day.
I think the law is there to keep a level playing field for all hunters as well as for the animals. Different states have different laws. I'm sure not all states prohibit radio communications like CO.
Every year out here I see increased small plane air traffic during hunting season. I know there are some breaking the rules. Well at least that's the way you feel
watching them overhead all day anyway.