The reason so many theories exist is because coyotes will do anything.
I set up like Kee mentioned. I like the cross wind with a nice big opening down wind. I try to set up so if they go for the wind, I'll see them before they get there. Where they come from, and wether or not they've been called before can determine what they'll do, but not knowing that, it's best to be able to see down wind. A safe assumption is they'll go there.
There have been days though when they come from straight up wind every time. Other times they'll find my blind spot over and over regardless of the wind.
That's what makes this so much fun. Ya never know what to expect! /ubbthreads/images/graemlins/smile.gif I've found however, the mentioned set ups give the best odds. Try to use the geogrophy to manipulate how you want them to come in.
Brad