Flyball is one of many dog sports that involve the dog running down a lane and jumping over low walls, grabbing a ball and heading back to the handler. As part of my attempts to sketch a few specific dog breeds in real life (Huskies, Border Collies, Samoyed), I went down over to the Winbledon Village Fair as I was told about a fly ball demonstration, and border collies could be found there.
I tried just machine gunning some shots - held down the release just as the dogs were about to jump through the focus point - as well as just tripping the shutter once they are almost at the focus point. The 2nd option seems to work _slightly_ better. I did stop down from 5.6 to F8 in order to gain more DOF though - at such distances and focal lengths, the dof is almost non existant.
Wish I had the time and patience for a pet. I guess my wolf plush will do for now ;-)