As long as the receiver has the option of calling a fair catch, I believe the only limitation on the defender should be no contact prior to the receiver touching the ball. I understand the rules dont support my position but it does mean that my interpretation of interfering is very leniant. Speaking of fair catch, what was the arm waive by the receiver? Seems like an invalid fair catch signal as a minimum. I think I take a pass on the targeting unless we are calling every single time the helmets touch.