Anyone ever notice the shocking number of former officials that now coach?
Seriously, it's incredible.
Listen, if you need to advertise to me that you're a former official, it tells me that you're trying to be someone you're not. Especially when you use words like "certified." As a coach, the quickest way for me to dismiss you is for you to present your officiating résumé to me.
I knew a coach/AD once who only revealed to me that he was a former D1 official when I was about to move. I believed him. Not because he told me, but because his professionalism, knowledge and demeanor those two years gave me no reason to doubt him.
He didn't need to advertise it. I respected that a lot.