Fast Cat is a 100 yard run, where the dog is timed while chasing a lure. Fast Cat is a fun gateway sport that dogs love. This is a quick video showing how I build drive for the bag.
Be certain that your dog doesn't consume any of the bag! Once the dog realizes that there is something inside worth chasing, you can use an empty bag and reward from the hand. Just another method.
It takes two people to do Fast Cat, one to release and one to catch. The rule book is available for download at AKC.org.