A lot of common themes, I will hit on some of the ones that have not been mentioned. For me, it starts with hot laps. Does the track seem organized and get them done early? If the posted race time is 7:30pm, I expect the first heat race to hit the track at 7:30pm. Not we start racing whenever we get done with hot laps. Are you paying the announcer by the word? A good announcer will go unnoticed, a bad announcer will keep fans away. There is a local announcer that I can not stand and will stay away because he never shuts up. Does the track have a functioning lap board? It is amazing how much better a show will be when you always know who the top five is and how many laps are left. I want to have a set time for intermissions. 10 minutes is best. 15 if you must, but not any longer. Also, intermission should be timed, not the amount of time it takes to feed the track workers.

It all goes about being organized and running the track as a business. These are on top of the other items that have been mentioned before: Track prep, Track cleanliness, number of classes, and being done in 3-4 hours.