A really goog Gunner was an expert in telling the pilots the right time to break right or left to bring a fighter into the gun box(the effective volume of the gun). There was the always popular "suck him in" maneuver. With the fighter in tail chase just outside the gun box, the Gunner would make the call and the pilots would pull the trhottles back to idle and throw up the airbrakes. That dropped a fair amount of airspeed very quickly thus sucking the fighter into the gun box.
We didn't always win, but neither did the fighters. Young, inexperienced fighter jocks were the most fun to mess with. I know more than a few that had their egos deflated by a big old lumbering BUFF. In the end, it was great training for both sides.
Jim