Most of our tracks down here run 6.0,5.60,5.20,4.60,4.20, and a 4.0 class 10 gate fee, 15 entry fee, and 35 outlaw entry some are 80% and some are 100% payback.
If you want fast bikes there they need at least 500` of shut down, as already said " stopping can be fun "
GOOD luck with the track, If I can help with questions just holla !!!