Put it another way:
A zone infringement technically requires a Mandatory Occurrence Report. If the controller feels that the other methods I have outlined would be more effective, then an MOR would not be filed.
So: We should file EVERYTHING and thus EVERY zone bust, however minor, would end up on the CAA's desk with all the potential follow-up that means. But the 'mood' of the controller (as I put it) might well prevent that.
Does that make you less nervous?