I have found we have better luck setting up in the early mornings or late evenings....the late evenings have worked the best for us,we slip in to a spot about 2 hours before dark and stay there til dark,we start out with a few barks and a little distress sounds and wait a while then do more of the Coyote vocalization closer to dark.We've had several Coyotes come in close to Us but it either got dark on us or they would hang up on the Property we didn't have permission to Hunt on...but we did get them to answer our calling and got 2 Packs come in towards us 1 evening which makes for a pretty exciting day no matter what!
We usually Hunt the heavy Timber and over-looking open field edges or simply thick timber/woods!We usually watch the heavy woods when first calling then watch the field edges and woods closer to dark.Its been a tough year and the Coyotes are pretty wise...we have called in a few Bobcats when they were in Season,my Calling Partner missed 1 then I messed up my chance with me forgetting my safety position on my CZ Rifle.
Another Friend of mine called in a Coyote one early morning in the heavy woods with His Johny Stewart Caller on Rabbit in Distress but missed when he lead the shot on the Coyote with his 12 Gauge Shotgun!
I've seen plenty of sign,tracks and had several pic's on my trail camera late at night...seems the Coyotes are pretty nocturnal like Deer lately!
I can tell You another time and situation when to really get those wise Old Coyotes....wait til the Farmers start cutting hay and mowing fields...the Coyotes really like scanning fresh cut fields looking for rodents,field mice and rabbits!
Another thing to do is be sure and try to be scent-free and spray down with scent killer to hide Your smell.There's going to be some nasty weather come in here thursday morning...if we get some snow that would be a good time to go out and try it some more!