Seems to me a lot of drivers just makes it more important to split into 3 heats; I'm with onething here. Splitting into 3 groups would've made the groups and total time smaller. Didn't time my driving sessions but I know I worked 2-1/2 hours in the morning and just under an hour in the afternoon. If we were in 3 groups I think it would've been more like a single work session of 2 to 2-1/4 hours.