1) piro-stops: practicing whipping the rudder to 90-deg, 180-deg, 270-deg and 360-deg. 2) piro-pitch-pumps: same as above but apply heavy positive collective and half way through the rotation, reverse the rudder while applying down collective ending up at the same altitude you started with. 3) Fly from L->R @ pilot center perform a 360 deg pirouette 4) Fly from R->L @ pilot center perform a 360 deg pirouette