so, I'm sorry to hear that you are getting notes from guys wanting to be clients that wont use rs2k. I've heard nothing but good about that service....so, not sure why they won't use it.
See if you can get on p411....I'm not sure how that works for a lady to get on there without being vouched for by another lady....but they must have something in place for that screening method, and set your "preferences" to people with a certain minimum of okays....
You mention not being able to get on the provider only board yet.....if you are primarily wanting to get on there to aid you with screening...well, that is a *Minute part of being on that board. Micro-*Minute.

So, you're not missing the "screening boat" by not being on the provider only board.
I'm assuming your desire to be on there is for Posing a question on such as this....and doing so there would certainly get you some excellent feedback and suggestions. I have picked up so many useful business ideas from that board. Excellent resource for that.
Having one method of screening only is certainly the easiest way to go if you no longer have an assistant..... I can understand why you no longer "need" one. I just had a flashback to what my hobby and personal life were like "pre-assistant" days.... It was not a most pleasant experience, very time-consuming and left minimal time for personal activities. As much as I like to type and check email, there are other activites I'd MUCH rather be doing.
Like bowling
*mi·nute 2 (mī-no̅o̅t′, -nyo̅o̅t′, mĭ-)
adj.
1. Exceptionally small; tiny. See Synonyms at small.
2. Beneath notice; insignificant.