I see this is an old post but figured to answer it anyhow better late than never right?
What works for me is if I can get into an area without getting busted and hear the song dogs making music I will get all set up with E caller and in shooting position then answer their howls with a coyote group howl. Has worked several times and had the whole pack come in usually follow up with KiYi after the first shot has stopped another dog for second shot.
If you aren't hearing any dogs howling might start out with a lone howl to see if you get an answer then go with a prey distress
