Probably 6-7 times in the hour before a national event.
3 for local.
I can wait if it's just training.
This got me back to thinking of when I raced Moto GP. Ratio was about the same.
Some of the road stuff it was all about timing. When the promoter was skimping and you had 4-6 units you knew the 15m before the race the lines would form so you'd time it at 17-18m.
It's all about the details.