Has anyone noticed that stands, where the caller is hundreds of feet above where the coyotes most likely are, are far less productive? It seems when I call off a high hill into a large sage brush flat or basin that I never call anything in even if there is an abundance of coyote sign in the area. I've had a theory for a while now that if the coyotes think that the meal is too hard to get to, they just won't come to the call. I've called some really good looking areas with high hills surrounding a large sage brush flat that looks like it should hold a bunch of coyotes, and I always seem to get no response whatsoever. Has anyone else noticed this phenomenon?