goodknight411:yes it's PADI. I think the main reason for touching the bottom is for stability for newbies. (not super sure, mabey someone else knows?) and also so you can tell how much you rise and fall with a breath.
Says who it's PADI? I have had SSI, NASDS, and NAUI training, all three uses the fin pivot, can't we just say that it is a scuba skill?