Mav, Just a thought but 100 bikes is not that many on that loop.
I think you could very easily add another 50 without anyone even noticing?
After all on a Duc you need to re-fuel every 4 laps...lol
Also us 'old farts' need a tea break evey other session.....lol
Sounds good though, I did a Nurburg Riders Course there 3 days and closed track, no cars, was fun but could not handle riding in a very close group od 8 or so, you need to have full confidence in the man and machine ahead, did not like it.