Dennis,
I agree there are some questions about how well this would work. Its hard to keep a very precise schedule especially when starting operations at the beginning of the day as not all essential folks like tow pilot of CFI may have shown up. I guess the sign-in sheet would keep people on a tighter schedule??!!
Also, what happens if you find a great thermal (really) and want to stay up for two hours…are you forced to come down as someone else had signed up to use the same craft?
Also, people may sign up, and then something comes up and they are a no show.
In a way, the sign up sheet we had been using seemed to work pretty well.
My two cents, but Don may have three cents to add. Of course, we can always experiment.
Alan