If You had a Motion Decoy it might pull the Coyotes in closer?I have the FoxPro Jack Attack and its a very nice motion decoy that has a remote with it that reaches out pretty far and You can speed it up or slow it down or stop it all together with the remote...and it has a small light on top to turn on at low light in the morning or at dark to draw attention to it!The decoy also has another wire decoy that can be added or taken off that resembles a Woodpecker/Bird.

Sometimes You think the Coyotes are leaving but they might be slipping into cover and circling around down-wind to pick up Your scent?