plinker,
If you're using a bark call, then is it a coyote challange bark ? What kind of caller do you have, and what are the styles of calls that the caller uses ?
I download my own off of the internet, then I use software to modify them somewhat.
Some of the ones that I've downloaded were the "Dominent Male Challenge bark, and another "Greeting Bark".
More than likely, what you're getting is a return bark from a dominent male, or female. Kinda like "get out of our area" warning. If you use a challenge call, they'll usually respond to those within a short period of time, and they're ready to do battle. Most of the time, the lead male will be in front.
I know the north country pretty well. Pick an area in the woods that is relatively open, say a clear shot for about 100yds. or more. Setting up in a homemade blind of brush and stuff, is what I do.
I place my caller facing into the wind, and as far off to one side or the other as it will go (usually 30ft. or so). In the woods, wind has a tendency to swirl, so it's hard to foresee what will happen in some cases. Do your best on scent control. We hunt brushy field edges and such, more so, so scent isn't as critical there as it is inside the woods.
Try to set your call in the clearest "shot area" in the woods and build a blind back aways. I usually build my blinds under a low pine, cedar, or hemlock. They provide shadowey cover and work great. I start my calls very low, and you'd be amazed at how far they carry. Usually a mouse squeek, or small rabbit whine will get their attention if they're close. They'll still circle in the woods, but their not as timid due to still being in cover. Even though the woods may be open, in their mind, they're in cover and more than likely, will come shooting in after a bit.
A good addition is to get yourself some rabbit scent from a local dog hunter supply. They use it for training beagles, and rig yourself up a cheap stuffed toy from a store. One that looks as real as possible, or can be altered to look as such. Stick it on a spring, or something that moves and douse it with the rabbit urine.
We just started doing this in brushy fields of late and it works great calling in fox, so far.
I'm looking into building something with a remote it seems to work so well.
Hey.....I'm ramblin on here....
Take care and good luck,
Bob