Yes, I need to get one of those clickers. The guy said first of all he was using the clicker just at the end when he gave them a treat but he found it better to click on every jump.
The black and white one surprised me he/she had quite short legs as well.
It's interesting that cats are really considered untrainable but recently that seems to be being proven wrong. Although I wonder if the invention of dreamies has something to do with it.
We had treat balls for our dogs when I lived with my parents but would never have though of getting one for the cat. Xander will fetch rolled up paper and bring it back to me.