To be successful at baiting coyotes, you'll need a very good and steady supply of bait, what ever that may be. It may take a while, weeks possibly, for them to find it, and once they find it and clean it up, you'll need to replenish it quickly there after, to keep them coming back. If you can get meat scrapes, and freeze them in a 5 gallon bucket with a wire tied into the scrapes, then tie the wire to a tree, or fence post, so that it takes them a while to eat it and they won't be able to drag it off, it might work.
If you're going to sit at the bait pile, always make sure that your scent is blowing away from the bait and away from the travel route that you expect them to come down. If they smell trouble, they won't come to the bait.
Problem is, when they come to the bait, will you be there? That's why you need a steady supply of bait, to get them in the habit of coming often. Then you have to hope that you're there when they are there.
As far as using calls along with the bait, might help. I would suggest simply using some howls, basically to announce that you/the new coyote, have found the bait and that would maybe convince the local coyotes thatanother coyoteis moving into thier food source and territory. I think the calling would work best sometime after the coyotes have found your bait. Otherwise, calling with distress calls, would be better done without depending on the bait to pull them in. Although a consistant bait pile may help hold coyotes in the near vacinity, so it may help you're calling odds. BUT it's much easier to call a hungry coyote with distress call, than it is to call one that gets to eat from a bait pile every night.

Make sure that it's legal to use bait in your area?