Interesting... I'd always done like 2-3 minutes on... and maybe 60-90 seconds off. And sometimes do things like try to pick the sounds ordering, such that I'm ending it with like a sound that logically makes sense.
Like let's say I'm trying Rabbit sounds. Well, then I make sure towards the end of it, to morph thru the sounds that sound more tired and losing energy. Such as ending with like Dying Jack, for example. Because it makes logical sense that after wailing at first, it'd sound tuckered out and near death.
As another small portable option that you DON'T have to blow... checkout the PocketPrey Digital Caller. They now have one that does 3 sounds! 9v battery to run it. And it works! Even helps pull-in Rabbits as well, if you play it more quietly.
It's just different though because you have to remember to direct the sound back-and-forth as it's playing out into the area, so the coyote will perceive it as the creature is still moving. You have to be at the ready when YOU are where the sound emanates from. At a moments notice you'll have to drop that caller onto your lap or the ground and bring your rifle/shotgun to bear. Ultimately you want the area to have visibility enough that you can detect him coming in from a ways away, so you can get ready with your weapon.
It's definitely exciting to have them run right up to you!
For mouth calls? Maybe try the danthompsongamecalls.com River Bottom Coaxer and the Weems Replica. The Primos Third Degree not bad either, but if you blow into that one too hard it can "hit a wall" and go quiet on you. So beware of that.
(The PocketPrey is that little black box in this pic, beside the Hornady ammo box)
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