Do a quick look for sign. Look for tracks and scat. If there is fresh snow finding tracks and telling their age is all the easier. Yotes are pretty much everywhere. If there is a food source and cover, chances are there are yotes nearby. Whether or not you can call them in will depend on your set up and calling ability, and how much calling pressure the area has recieved. Coyotes can be pretty smart, and will learn not to come to most game calls after a few near death experiences. The time of year can make a difference also, whether they are breeding, current food supply, or if the young dumb new pups are out and about. But like most hunting, success is equal parts hard work, luck, skill, and time spent. If it was easy, everyone would be doing it.