Yes, rattling bulls can be an effective manor to draw on a bulls curiosity! Depending on the situation at hand you are more likely to draw satellites in first over a herd bull, but if within earshot of a herd the bull, he will generally sound off with displeasure at two bulls sparring or fighting it out so close by to him & his harem! This at minimum gives away his location!
Rattling shouldn't be confused with raking a tree or brush, this is a totally different method as well as for different reasons. Rattling is simulating two bulls in the area either sparring or competing for cows. Raking, foot stomping & tossing things signifies a single bull, he may be doing this because he's feeling his oats with the oncoming rut in mind or challenging/intimidating another bull, too they will perform this method when attracting cows their way, all depends on the situation! Thing is, they are different & should be viewed this way for the right application at the right time!
ElkNut1