Walk this way ?

[bniu]

if the coach is coming towards me to argue something, as long as they walk calmly, I'll let them approach me and when they get close enough, i'll take a small and slow step towards them with a "yes sir?" or "yes ma'am?" to acknowledge their presence and let them start the discussion. If they're civil about things, i'll explain things to their satisfaction and check with my partner if need be, if they're hostile, i'll say the minimal stuff and tell them conversation is over.