We hunted almost exclusively in Mexico, remote Baja North, and Sonora.
I would only dare to think of how many coyotes we had killed out of the back of the pick up. Of course, in Az and Ca we walked out to make stands. It is only normal to think that you have to walk a long ways away from the truck, but it just is not so.
When hunting with a 4 man team in Az, we would drop off two guys and drive down the road 2 miles then step outside the truck say no more than 50 yards, set the caller down, and get ready to shoot. We were hunting in flat dessert with scattered Greese wood bushes only, not much cover.
We had an earth tone pick up, and coyotes would come in, stop and stare or start circling down wind.
60% of the coyotes you kill are yearlings, which explains some of the success.
By just setting the caller within 50 yards of the truck, you can time your stand, return and pick up two guys that you had dropped off, then leap frog forward and keep repeating, all day long till you want to drive to another area. The more stands you make, the higher your success rate.
When you find the barometric pressure dropping, leading edge of a low pressure front, you hunt, hunt, hunt.
WE hung two socks that each sock had two cans of sardines packed in oil in them, and misted the air with rabbit urine to test the wind direction, face masks, gloves. It usually took 46-52 animals to win the hunt. Our worst weekend was 13 animals, average was 32, and all time best was 56, all in Mexico. You would not dare go down there now. Most of my competitors have all passed on now, I think that Leonard B. is still around.
In Az, sardines is considered Bait, and it is illegal. Trappers lisc in Ca. allowed you some extra privileges, check your local regulations as to what is legal in your area. I am sure that shooting out of the back of the pick up is illegal anywhere in the USA except the possibility of the Indian REservations where the Indian warden may give you a pass. Check your local regulations.
There are probably no set of guidelines that would apply to all hunting situations as states and locations vary. Also, how call wise coyotes also determine how you should hunt. Hunting in Alabama is sure different than hunting in Wyoming, for example. Part of the hunt is in selection of stand locations, making a makeshift blind, or carving a place for your stool back in a bush to hide your silhouette. In other words, setting up an ambush, judging the wind and terrain, is all part of the fun. Competition hunts demand a very different discipline. It is way more fun to hunt with friends than a competition, but you may have to get that out of your blood.
We hunted from Mexico to Montana and over to West Texas. With the right weather, moon phase(time of day), throw out some attractant, you have sound, scent, now throw in some competition from fellow predators, and animals get very excited and often never hear the gun go off or know what direction the sound came from. Expect multiples to come in, and you are ahead in the game.