An electronic or other type of varmint call works very well calling in yote's. But you have to learn what calls to use,and the length of time you use each call technique.
We use electronic calls during the day and night for them.
Decoys also work very well. I prefer to use the electric motion decoys,but stationary decoys work really well also. These are daytime only.
We also bait them.When we shoot big feral hogs,that we don't consider edible,we will drag them out in a field,and in a day or two,the coyotes will be all around them getting their fill.
You can easily get multiple yote's off the baits.