Can't imagine anything worse lol.
I have to tell you, it's a lot better finding out beforehand than at a contest! This sort of thing it a large part of the appeal for me, you are able to continually pursue perfection essentially forever. Bill was wrong above, this *is* the fun part.
I would also note that the "perfect practice makes perfect" doesn't always work for everyone. I am the world's worst practice flier - the difference between my practice flights and official flights is probably as large as anyone that is currently competitive. My concentration wanders all over the place, I certainly don't have the level of focus that Dave has, or the natural ability that Ted seems to an uncanny degree. But we (Dave, Ted, Jim, and I) rarely just practice to be out there practicing - we are always working on something specific.
Many of the groups have one "leader" and a lot of followers, we also don't have that. Dave, Ted, Jim, Phil, me, etc. are all pretty competitive fliers and we act mostly as equals (although if you look at the record, we aren't, obviously) all working towards the same goal to try to raise ALL our games. We do the sort of coaching and corrections that Bill noted *all the way through the end of the Walker flyoff*, if applicable. Usually we work with primarily one person, with the others funneling suggestions through the "prime" coach. How well each person works with the other varies from year to year, so we change around. Jim might be able to correct something from Dave better than Ted or I at any particular time, for example. We can all do a decent job of coaching but sometime it just clicks better with one person. It's as much psychology as it is technical at times.
This is actually a very interesting topic that is seldom discussed.
Brett