If I recall correctly, there were far fewer schedules printed showing the August round as an endurance round. At the shows most of the ones that were handed out had the endurance part scratched out. As we handed them out the majority of people were informed that it was not an endurance round. Personally I would say that it is mostly known as a sprint only round. I don't think that you would have any problems by treating it as a sprint only round.
Bookmarks