My thoughts.....
1. With big open country like that you may need a louder call.
2. I don't turn my call off and on whenever I am running a distress call. I leave it going.
3. The coyote was barking at you because he knew you were there. Seen you, smelled you, or has played the ol game many times before.
4. Time of day. I don't do much day time hunting here, but when I'm out and about it seems like I see more coyotes during the mid mornings 10-11am.
