I agree with everything stated so far. But I want to stress something. You must play the wind right. I try to have the wind in my face always. If I must I hunt in a quartering wind but its not ideal. You can do everything else perfectly, and if the wind is wrong you, won't do any good. I like to hunt with my back to some kind of natural boundary such as a creek, river, pond or open field. This reduces the inevitable "circle". Coyote will always try to circle downwind of your setup. I like a open field so I can try to blast him before he catches my scent. My two cents, hope it helps!