Flyball can be a lot of fun, although it's not "intellectual" enough for me to stay interested in it! I like something that you have to keep advancing in.
But it's great for those high energy tennis-ball-crazy dogs! Even my youngest chow learned to do flyball. I had to work on her ball drive, though. For a long time I reinforced her for every time she picked up the ball, and I had a couple of balls that I had cut a slit in so I could put treats inside the ball itself. That way the treat came FROM the ball too, which helped her interest.
The first photo is working hurdles only, the second was just working ball drive (obviously she's not heading for the hurdle in that one!). She's about six months old here.
I didn't keep with the flyball because I had too many other things to do (like obedience, rally, conformation and agility) but I still encourage enthusiasm in the ball. Just tonight we were playing a game - whoever brought me the ball got a treat! It's funny to watch two shepherds and three chows all trying to be the one with the ball.
I may get back into flyball with my youngest. She was having fun with it, although she was never going to be a speed demon like the BC's are!
Melanie and the gang in Alaska