The price of racing.

I agree with you......some tracks that I have been to have a totally open format where you can make a pass and then get right back in line again with the possibility of getting 6,7,8 maybe more passes if a person chose to do so whereas other tracks have more of a format and call you up by groups and it just seems to drag things out and like you said you might get 3 passes in a 4-5 hour window........those places I typically will avoid.
I've been to both types of tracks, and much prefer the open style. In fact the first time I was at a track that ran the class format I was unaware of it and got chased out of the staging lanes twice before someone finally explained it to me. Think I got 2 or 3 passes that day, not nearly enough to be consistent with a completely new car.