Over at OnePocket.org there has been a suggestion of wrist bands to help with the policing. It would also help if there was a printed list of User Names available to refer to. Then, there is the job of enforcing the "paid members only" rule.
From what I have seen of Jay's One Pocket challenge, although it does tie up one or sometimes two of the tables for a couple nights, members really seem to enjoy watching these guys like, Gabe, Corey, Alex, Efren, etc., try to run racks into one hole, so I don't see that as much of an issue myself. If others do, we could certainly ask Jay if it would be possible to confine to one of the two tables for the challenge, so the other would still be open all the time.
The $25 is a good deal especially if you like to play and will be there for a few days. Even if you don't play that much, it is always good to drop in and meet fellow members of AZB & OnePocket.org.