I searched the forum but didn't see a relevant discussion - I hope I didn't miss any.

I finally got in the with a Kgril agency. If I choose to try with a different one, can I just provide the details of the agency that has approved me? Are they likey to provide a reference after just one visit, or do I need to build a relationshop with them prior to their providing a reference?

I don't know where you are but at least in L.A., If you tell them you saw this girl from this booker then they'll usually call that booker to confirm.
i think only couple of bookers who don't talk to each other.

In my experience I'm finding it hard to get myself verified. Recently, I was also able to get in with an agency and saw their girls a number of times. I asked them if I could use them as a reference but no response so I went ahead anyways but they would never verify me with other agencies. I now have two agencies that I'm with and the most recent one said that they would verify me but most agencies need two references so even if that agency is verifying me it is not getting me anywhere. I think it all depends. I think some of the lower tier agencies that take on newer clients without references aren't always willing to verify because they want that business.  I know these agencies aren't verifying because I'm bad client, because I am a good client and they keep gladly taking my business.  Its a very tricky industry. Even if you get an with an agency it doesn't mean that you're "in."