VXIRONwoMAN,
Last year was my first Zu, and I was/am EXTREMELY picky about my baby. Everyone was very helpful on the trails, and it's not like high school, so there's no peer pressure. If you don't want to do an obsticle, you don't have to, and no one thinks badly of you for it. I'm probably going to take it easy this year too (don't want to scratch Vicky), so we can both sit back and cheer the other crazy people on.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless