I was also was wondering this and emailed Paul Smith a few weeks ago. His reply should cover some of your questions, "Sign ups will only be taken at the event, by the mini tournament director. In the past we had many people sign up ahead of time and either not play or sell their spot to someone else. This has resulted in lots of confusion at the start of each mini. So, this year no early sign ups and selling your spot is prohibited."
Mark
I assume you must mean "Scott" Smith, not "Paul" -- unless there is another Smith involved!