Tim....Why are you so damned logical and simplistic about your concepts on calling predators? Don't you know, so many nowdays want to add "another element","another distraction","a longer shot window" to their calling experience.
We are dinosaurs my friend. We methodically head out to good habitat, slip quietly to a stand location, use simple distress sounds, kill the coyotes that come, then move down the road and repeat as often as necessary or desireable.
We need to alter our approach, next time we go out, Im bringing some horn howlers,practice up on the myraid of manifold vocalizations,(lone howl,interrogation howl,challenge howl,group yips and yaps and all the rest) collect a truck load of decoys,(enticers,rigor rabbits,feather flexs'and what ever else is out there) and we are gonna do it using the "new technique"!!!
Ive got a radio controled car we can use, stretch some fur over it,and Im thinking maybe mount a small servo controled miniture rifle barrel on top along with a small micro video camera....imagine the fun we can have with that set-up!!!
On second thought........hell, lets just go out and call a couple of coyotes the same tired old way we've been doing it huh