Wow, that's sounds pretty much the same as the American Autocross events.
When I said 5 runs in a session, I meant five one-lap runs, not a 5 lap run (i.e. Enduro style). We also did the same 4 groups... 2 before lunch 2 after. And we also ran the course backwards the 2nd day.
The thing that sucked for me tho, was having to drive 2 hrs to Sacramento for the event... or worse, drive to Monterey!! I'm all about the local events this season.
Also, the season begins in January!? I guess the Jan events *aren't* in the Boreal parking lot!