Well, the Wiener has horrible structure, and shouldn't do flyball (because he's a dachshund...and they should only do earthdog).
and I have structure problems too as she pointed out to me...
"I don't have any idea if my dogs respect me or not, but they're greedy and I have their stuff." -- Patty Ruzzo
"Dogs don't want to control people. They want to control their own lives." --John Bradshaw