The device is usually held with the barrel between the index and the middle finger and {HEAD ~ the hand motion} may or may not be accompanied by a proper foot motion, depending upon the type of {TAIL ~ motion} that the user is training for 
The device is usually held with the barrel between the index and the middle finger and { HEAD ~ the hand motion } may or may not be accompanied by a proper foot motion , depending upon the type of { TAIL ~ motion } that the user is training for
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH