We don't have a club here in Austin. I'd love it if we did. I go out to lake pflugerville about once a week and jump off a dock there with a friend and her dogs. If your north and would like to join us sometime send me an email firstname.lastname@example.org
Greg at Gateway Dog Training does some dock diving over at the pool at Hearts and Paws. Try him at email@example.com
Or come on out to the event this weekend in Garland. It will be my first event also. The people have been super friendly and helpful and I am sure they will help you out. I wont be there until Sunday. My Jack Russell Terrorist will be at a jrt playday on SAt, but we will be there jumping(or trying at least) on Sunday.