A good friend who is a bow hunter and an excellent caller came with us on the hunt. After the bull responded to the first bugle he used (4) different diaphragm cow calls before the bull bugled again, he finally responded to a raspy sounding one that convinced him we were in fact a cow that had strayed away from another bull and this allowed us to get in his comfort zone. We took our time as the wind was in our favor and we didn't want to push him away by over calling.