Good point about stopping the rod, Biggie!
Here a description and video of Borger's 3-Point Grip:
Fish, Flies & Water [blog] Three-Point Grip
One of the points of contact in the 3-point grip is the heel of the hand on the reelseat. I do that quite a bit, as I have large hands and small grips. When I don't have the heel of my hand on the reel seat, my fingers are on the blank. Funny thing is, I can't stand large grips....???