Gerald Stewart’s reply:
There are two philosophies of calling technique and they both will work to varying degrees. You can call intermittently, choosing your time gaps depending on your own personal preferences, or call constantly with an electronic caller.
Most people using mouthcalls will choose to call for a short while and then sit quietly for a couple minutes. You can do this for several sequences and then move to the next spot. Those using an electronic caller have the option of letting the caller do the calling for 10 to 15 minutes then move on. Both techniques will work.
In the winter, food source sounds will work well for you. In later winter and early spring coyote vocalizations will work extremely well as calling sounds.