Tennis Tutor features counter-rotating wheel operation and an electronic control panel which gives you fingertip control of ball speed, trajectory, and ball feed rate (the time interval between ball throws). Ball speed ranges from a gentle toss for children to world-class speed. Ball trajectory can be set anywhere between groundstroke and lob, while ball feed rate adjusts anywhere from 1-1/2 to 12 seconds. You can set Tennis Tutor to repeat shots you need to practice, or to oscillate and direct shots randomly across the court. Tennis Tutor also features an exclusive anti-jam ball feeding mechanism, and a 10-second start-up time delay to give you time to get to your side of the net. Tennis Tutor is truly portable, with the towing handle extended, it tows just like luggage. When you get to the court, the ball hopper opens in seconds to ....read more