For me it depends on what specific manuver I am flying, When just flying circles I usually fly thumbs both hands... when flying 3d I usually have thumbs in my left and pinch for the right, when I fly pattern I fly thumbs except for some reason after an inverted exit, then I fly pinch both hands... I also fly tumb in my left hand and pinch in my right for spins... but that is when I don't think about it... when I think about it I just mess things up.