SpinDoctor™ G2 To make sure that underground valves are in good working order, they need to be “exercised” periodically. HURCO’s SpinDoctorTM makes the job easy and fast. With the SpinDoctor’s “turn-key” operation, one person can make certain that all valves will operate when emergencies arise. Videos are viewable with the Macromedia Flash Player. The Flash Player is available as a FREE download by clicking here.