JR, you are missing the point.
I do not agree that you should use the Tower Principle for violations. I think you should call the obvious fouls and violations, not just the ones that you are the only one in the gym can see. Maybe doing that, there is going to be advantage, but I think you do not call a travel unless it is really there. Do not call what "looked like" a travel. Just another way to look at it. I am not saying your are wrong, just do not agree with that philosophy personally.
Peace