Practicing manual focusing

Want to know the quickest and most effective way to getting used to your manual lens?

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I'll tell you anyway: find a subject that is constantly on the move, focus, take single shots (not bursts), and do like 10 in a row before reviewing the shots...

...what I'm basically saying is - consider going to a dog park. Practice quick-focusing while the subjects are moving. No treats! That's cheating. 

Was on my way home and passed by the neighborhood's dog park. I did 5x10 really quick shots, and got ONE decent photo! Not sure how I'm supposed to feel about that. 

Contax Zeiss Planar 50mm f/1.4 T*