Greenside,
As you know, there isno absolute answer to that question. I remember Gerry Blair writing that he has worked a coyote for upwars of an hour, and the coyote finally came in. I am assuming that you are getting a challenge bark/howl in response to your efforts, but the coyote refuses to come any closer. This often means that your coyote is standing on the territory boundary line. In that case, you have the choice of moving in on the coyote or coming back another day and setting up closer to the spot where your coyote hung up. I usually choose to come back another day. If you are experiencing a coyote that is standing over there out of sight and barking in frustration, chances are that he knows something is not right. If you are hunting with a pardoner, sometimes you can continue calling while your pardoner makes a wide circle and sneaks in on the frustrated coyote to give said coyote a pill to quiet him down. /ubbthreads/images/graemlins/smile.gif