Yep, I've tried for a year. Cats, dogs, birds, kids... Different cameras, AF modes, different settings, primes, zooms, old manual lenses, newest AF lenses. But the ratio of in focus/out of focus is still the same in average with all my cameras and lenses no matter what. I'm not complaining, my ratio is not bad, but not perfect.
Today I took different approach: think about shooting moving subjects like gun shooting. (no gun discussion please!
) That means "cold" head, steady arms and hands, steady posture, breathing right, and predicting. Predicting when my subject will move and where. At least trying to predict. I tend to be overexcited to catch the action. And I miss it often because of that.