RE: Coyote problem
If you can pin point where they're comming under a fence that's a good place for a blind set - snare would work great there if they are legal in your state. Also if they are coming in on a regular basis to a certain calf pen that would be a great place to setup for an ambush on em. Light up the area a little and just wait for them to come in. I personaly love calling them in but that's probably not the most efficient way to get rid of nucance yotes like you got there.
Good luck