Do some scouting first where you want to hunt, look for scat and tracks. A coyote’s sense of smell, sight and hearing are exceptional. Use wind direction to your advantage. Never approach your hunting spot if the wind is going to blow your scent into the area that you expect the coyotes to be in. Even if there is only a slight breeze, coyotes more than a mile away can smell you. You will be busted before you even start. If you can't get into your spot because of poor wind direction it's best to save that hunting location for a later date when the wind will be more favorable. When you do set up, remember that the majority of the time coyotes will attempt to circle downwind of the sound you are using. You will want to be able to see them when this happens. You need to set up where you have shooting opportunities as they circle toward the downwind side.
Your hunt starts the second you park your Ranger. If you think a coyote can see it from where you plan to set up or, from where they might approach, don’t park there. Coyotes are very leery of vehicles so park out of site and downwind from your hunting area. Do not slam the doors; quietly push them shut. You’re dealing with an animal that can hear a mouse squeak from 300 yards away.
Position yourself where you have a backdrop to hide your silhouette up against a bush, tree or on a hillside but not the top of the hill. Coyotes respond calls out of hunger, territorial issues and curiosity. The majority of all coyotes are called in using prey distress sounds. Electronic calls and decoys are nice, decoys give the coyotes some movement to look at besides you. Ecallers move the source of sound away from you, the hunter, but they are expensive. Best advice is to just get a few good handcalls and practice, go out calling in the early morning 20-30 minutes per stand, then move.
Here is my coyote gun, Tikka T3 stainless .243 with Ziess Rapid Z600 scope.