A lot of folks have gone to using night vision stuff to get coyotes & hogs. Works quite well,,, until the yotes figure that one out too. Many years ago,, (1970's) I went out night calling for foxes. I was using a normal spotlight with a red lens. I set my call up,, settled in,, waited about 10 minutes,, then hit the cassette player. My light was off. I gave it about 30 seconds,, flipped on the light & I had 5 gray foxes at a run towards me. Freaked me a little,, but I did manage to get one,, and saw where they ran. Apparently,, I had set up near a den. Traps helped me get a few more.
It's wild when a crowd of critters all come running,, fast,,,!
Tell them to focus on nailing one at a time,, being sure of the shot.