The electronic calls are good because you have your hands free and there is less movement on your part. You can just turn on the caller and let it run.

Go for about a minute and a half or two minutes then break for about 5. If nothing turn it back on and gradually increase the volume untill it is up all the way and let it run. Works great when combined with a decoy.

I like moth calls when I go out hunting in general. If you see a coyote you can pull it out and give him a couple of screams to see if he'll come in. IK always have one on me when I am bohunting.