You should come out for a Time Attack day. No limits on those days, and you will get a lap time so you can see if you are improving.
The format is an out lap, 5 flying laps and an in lap. You will get 4 runs in a morning or afternoon session or you can do a whole day and get 8 runs. Let me know if you are keen for one of these and we could arrange to go out together. Your fastest time of the day is the only one that counts towards the standings so you get 19 flying laps to practice.
I'm running at Jap nats on the 14th at Queensland Raceway. Need a Jap car for that though.