I made one of my own and proved it worked.
I didn't take the shots as coyote season was closed but I had two of them come in to my turkey decoy.
I counted coupe on both of them at about m5 yards by getting my bow up in shooting position and drawing on them. They were on opposite sides so I had to move to get on the second one and I managed to get it done without spooking either of them.
After I counted coupe, I lower my bow and just sat there watching them until their curiosity was satisfied and they left.

God bless,Mudd