This tread is very interesting. I think Bracket racing is kindoff boring and I believe the only way of Drag racing is heads up.
This is how we do it in Peru:
10 to 10.50 Class A
10.51 to 10.99 Class B
11.00 to 11.50 class C
11.51 to 11.99 Class D
12.00 to 12.50 Class E
You guys here have faster cars so you can do 9 and 8 seconds following this logic. So when the track is open, you have 3 passes to test your car and classify. Then everything stops for half an hour and the race begins with the slowest class working the way up to the fastest class. You are only able to reclassify one time.