I've hunted the high country of the William O. With little wimpy bugles, I'd get a responce but the big boys wouldn't come in, just talk back. When I got big and bad I would call in nice 6x6's and 7x7's, took some good pictures, played with a bull for 2 hours until the wind changed and I could go in on him. He was a 5x5, through my bugled off two the side and back behind me, he walked by at 20 yds, all by himself, no cows, no spikes. I've called in a lot of bulls that i could have killed, but never could draw a big bull tag. I work the bull how he wants to be worked.