Sean Lanyi is a Class "A" PGA Professional, Level III Aimpoint Express and Putt Doctor Certified Instructor, and a Golf Channel Academy Golf Teacher. He also represents Blast Motion Golf and he joins "On the Mark" to talk at length about the Blast Motion Sensor technology and how you can use it to improve your swing rhythm, tempo and timing. Sean also shares tips and drills you can employ in practice to ensure that your putting, short game pitching and chipping, and golf swing remain well-timed and in good working order.