We don't talk to the ref. You never see McGinn, our captain, talking to him at all. Ever.
We also never "crowd the ref" - which honestly is a testament to our character... And yet we have the 3rd worst disciplinary record, unjustly IMO.
It's an unfortunate fact of the modern game that if you don't put pressure on the ref, you won't get the rub of decisions in your favour. Ridiculous, but that's how it is.
On the other hand regardless of whether we want to box clever with the officials, the team captain should always be asking him to explain/clarify decisions and is entitled to address the referee to point out patterns of poor behaviour from the opponent.
Terry was great at this. Jack didn't do it because he became a target of the refs for his "diving" i.e. drawing fouls so they couldn't take him seriously. I'm not convinced McGinn would be taken seriously either, and maybe he knows it, hence why he doesn't try.
I'll bet a big calm lad like Mings or Torres could get the ref's attention in a positive sense, though... Just saying.