Join Date: Jan 2006
Location: Half the distance to EWR than PHL.
Programs: UA, AA, B6, BA, Hilton, Hyatt, Marriott, IHG, SPG
Posts: 11,695
From experince, the method that seems to work the quickest is "Everyone board at once" I've had this three times. All three times completely full flights. Once on a BA A320, then a BA 777, and earlier this year on a CO 733.
Tonight I had FC, Platnum Elites, Gold Elites, Silver Elites, Elite Access Rows 20-25......., Everyone else Row 20-25, etc. It took over a half an hour to board a 733 doing it this way.