When u get a bull to answer, and can suck him into getting good and PO'd,and get him to go whiz all over your buddy while screaming his face off at you, and watch your stinky buddy shoot that bull after it whizzed all over him, and absolutely vibrate for the rest of the day over it.
Ya might be doing it right. once anyways.
But, getting them PO'd is definitely a blast, and any creature that responds to a call is fun to hunt. I do have a tough time choosing betweeen a PO'd moose and a PO'd elk though. Just too much fun.