Hummingfrog,
I don't think we can settle this and have a clear winner. We have been using this system for donkeys years, it's no different to the way our big airline worked when we were part of it. Two sales later we are still using this system, converting our new owners from their own methods.
Your system obvioulsy works or you would not be doing it, however the same goes for us. I have spent around 14 years split almost evenly between using the two methods both in the Northern and Southern North Sea.
I am a man of many years and am in the twilight of my career, so I am happy to use our old mothers' (KLM) concept and save the excitement for the drive home.
Until you have used this concept in its total form it is difficult to understand, and over the years many friends from other companies have mocked us, till a few joined and were converted!
OopsNearly