Re: Reno Coyote
You've got good questions! Your predator hunting future is probably bright!
Here's my take. Someone else may have some experience that contradicts this but...it is generally becoming common knowledge that "brighteners" in detergents will cause your camo to be more visible to animals. I don't know how to confirm it but I avoid it. "Better safe than sorry."
I go middle of the road on scent control. I don't use Scent-lok clothing. (I will when I can hold my breath for an entire stand.) I do however use unscented detergent to wash my camo. Similarly, I avoid highly scented shampoo and soap. I'm not convinced that scent killer sprays will be effective enough for coyotes. That said, I know very effective callers who do use all these products.
You are on the right track that watching the wind direction is the key. I don't, however, always face the wind. In fact, I try to be able to keep an eye on the downwind because a savvy coyote will many times go downwind before coming into the call. If he makes it downwind, you just educated another coyote. My thinking is "make him show himself if he wants the downwind." Keep analyzing your set-ups and how they play out. You'll be getting more and more consisitent results as you go along.