We trial mostly USDAA, some AKC, never tried NADAC although it's pretty big around here (Atlanta GA area). We don't travel very far afield because there are a lot of trials right here, and I promised myself after trekking all over the country showing Siamese cats 25 years ago that I would never do that again!
She gives the jumps a lot of air, which is spectacular looking but slows her down. (At least it means she never knocks a bar. Now, about contacts . . . < g > ) She has her Agility Dog title in USDAA and 2 Qs in Advanced . . . she has her Open and Open Jumpers titles in AKC. Not bad for an amateur handler on her first dog -- she could have really been something with proper training from the beginning.
She also has her UKC Started Hunting Retriever title and is working on her Seasoned . . . we may go for Junior Hunter in AKC first, don't know.
Do you ever trial here in the SE? I'm a member at Sirius Dog Agility over in Decatur, they put on 3-4 trials a year. Double Gamblers and Snooker at every trial, Pairs Relay one day. Plus if you work 6 classes you get a free sweatshirt and they feed you lunch . . . it's a pretty fun scene.