This video shows how I tap center. I use a method I developed myself which uses a rhythm established by the pot touching the left hand. You tap with the right hand on the up beat of the rhythm. No guess work , mysticism, or esoteric knowledge required. You just need some coordination and practice on how hard to tap.
I hope it helps.
Here are some links to some other videos on tap centering.
   • 9. Learning Tap-Centering Clay before...  
   • SIMON LEACH - how to tap into centre !  
   • How to TAP on Center on the potters w...