The current format is a marathon compared to the "rule book" stunt event.
The current format is explicitly permitted in the rule book, so it's as much a "rule book" stunt event as what you refer to. For the large number of entries it is *far far better*. It also tremendously reduces (although doesn't entirely eliminate) the luck of the draw with regard to weather and the effects of judge fatigue on the results.
For a counter, look at the old FAI WC format for qualifying - which is a lot closer to what you refer to as "rule book stunt". It was an absurd joke that had rounds lasting 36 hours in some cases. The new format, while still less than ideal, is a huge step forward for FAI.
Arguably, NATs qualifying rounds actually do follow the "best of two" format. Treat each day as a separate contest, and then you combine the results of the Wednesday contest, and the Thursday contest. Actually it is 8 separate contests if you look at it that way.
Even with 40 entries in a class (average for Open over the last 10 years) the two round format is completely unworkable if you care about removing the randomness.
You might also consider whether it is a good idea for anyone's rule book to explicitly call out a format. Doing so does not permit variations for the facilities, entries, etc. I think this is a big mistake in the FAI rule book as the WC format is locked down to the least permissible. If you had the WC in Muncie I am sure some international type would force us to have to 2 idle circles even though we could get the round length down to 2 hours using the 4 we have.
Please don't misunderstand the other argument - Randy, Keith, Ted, Howard, and I, et. cetera, are arguing over how you MAINTAIN the current exceptionally high standard we have had for the NATs. We all are in 100% agreement on what the ultimate goal is, and that is to keep the best contest in the world at this high standard. We differ on the means but not on the goal.
Note also that this is an argument between long-time die-hard competitors and people who have been at least peripherally involved in the operation of the contest for many years. Any of us will be happy to explain *why* it is the way it is, or how it works, at any length necessary, and why it is the best way to run it that 60+ years of experience has been able to develop. If you have either not been involved in either running it or competing, we will listen to any critiques or comments for improvement but if the suggestion is to do something like "fly everybody together on one circle and take the best of two and that's the winner", you don't understand the issue. At all.
Brett