Lower the price of gas, plane tickets, and improve the economic outlook of the average consumer.
The Nats attendance is directly related to these factors.
Not everyone has a couple months of vacation every year or is retired. Many younger people have jobs and families that have to be included in their vacation plans.
I agree, but I think it's the time more than the expense. At this point, it's essentially impossible to count on being able to fly to the Nationals. So you have to drive. It's a *long* way from the real hotbeds of activity.
I don't agree it's too long, however. For many participants, it's a two-day contest. If you have to drive for 6 full days, I sure want at least two days worth. Change it to a 2-day contest (say, one day of qualifying and then a Top 20 flyoff), and most people would find the 6 days of driving for two flights even less appealing than now. That's how it got to be a 4-day contest in the first place- because people complained about spending $1000-$2000 to get in one or two flights.
For stunt, I don't think that the attendance is really a problem, and I doubt that the current attendance is less than it was in the mid-80s. If we doubled the attendence from this year, it's very marginal whether or not the facilities could support it. It was certainly strained to the limit in 2004-2005 with 50% more than this year. Stunt, in the last few years, is close to the largest single event at the entire nationals depending on how you count.
The other events, however, have just plummeted. I won't speculate why, but it's undeniably true. I think it probably reflects the overall decline of the event everywhere, but it may be that there are people flying the event locally but don't for whatever reason decide to go to Muncie. I sure don't see a lot of people flying anything but stunt, even at the NWR and other larger local/regional contests, but obviously I wouldn't go to a big non-stunt contest, so it's possible that they exist but I just don't know about it.
As long as it stays in Muncie instead of moving around (which will almost certainly never happen), I don't see a lot changing.
Brett