^ This. Most of the setups will be free by then and pools absolutely must take priority over friendlies/money matches at this point in the day. If people want friendlies, they should show up early enough to play or do the best they can to help guide the tournament along in a timely manner.
Perhaps you should consider adopting something MikeHAZE does at his events and make the crowd watch winners/losers/grand finals of singles and doubles as well. I heard he'll even go around and unplug all setups if he has to. Finals have been underappreciated by attendees for quite a while now so I agree with his decision to make people watch them instead of letting Finals linger around like a glorified set of friendlies.