Actually the cows attract the bulls when they go into estrus. Once the bull has his herum of cows he will call them back to him with different types of bugles should they get split up. To take advantage, Spend time in the woods with the elk,learn how to call properly if your going to use that strategy. The elk around here are getting very very call savy from many hunters educating them with their attempts at sounding like an elk. That doesn't mean you cant call em in if you know what your doing. I've had way better luck letting the elk call me into them. Once I'm in their circle, i let the situation dictate whether I'm gonna bugle,cow call, or just sneak in for the shot.