I personally don't find it hard to make the call. I definitely don't agree with his philosophy. Officials , in my opinion, that have a difficult time with it is because they are not officiating the defense. If you officiate the defense it's not difficult. Again, just my opinion. That's why fans have such a hard time because they are watching the ball handler and not the defensive guy. It's only natural to watch the ball. Good officials train themselves to referee the defense. Just an opinion from someone that's worked all levels other than Pro. Don't get me started on that.