Welcome to the forum. I can't help you with Illinois but I can tell you that a lot of the coyote or preditor hunters are closed lipped about where they hunt. Coyotes are a smart animal and quickly become call shy so the hunters don't want a new hunter causing problems in the areas that they hunt in.
My suggestion is to find a open area that is fairly brushy and has some ravines running through it. Set up a call and see what happens. Just remember that when they are coming in they are usually quite wary and will be looking for any movement so you are going to have to be quite still, even if you are sitting in a blind. You may also want to ask around a gun shop or a sporting goods dealer in smaller towns and see if they may be able to give you a hand.
We all spend our time at the range, making sure our rifle is shooting just right. We get it dialed in, and then we head to the woods, ready to shoot our animal. Well, what happens if the animal comes out where you do not expect it? Will you be able to make the shot?
This scenario has happened to me. My first deer I ever shot, I had to shoot left handed. I had never practiced that way, and paid for it by having my nose broken with the scope. If I had just...