All right then....so it seems as if all replies to this question have been "Yes, in boxing, the heel comes up."

Now, in Shaolin, I have been taught that one should pivot from and keep grounded the heels to get a "push" through the heel, up the leg into the waist, thus expressing power through the arm to the hand. I have also learned the other method of raising the heel in karate style and boxing. So my question to you all is, have you also tried both methods and if so, which do you prefer?