I live in Indy! Of course, this weekend is nuts with family coming in from out of town. I might be able to swing Friday, though... Do you have a link with info about the event (times and such)? I've never been to a flyball competition.
EDIT: Nevermind. I found the website.
EDIT II: I can't seem to find information on what hours the event is open on Friday. Is it not open for public audiences?
As long as your kid isn't the kind to run up to strange dogs, you should be fine - there are junior handlers on a number of the teams and we always have young spectators who enjoy seeing the fast dogs.