The grip should make it so that the racquet face is parallel with the sidewall of the court. If you will not change the swing from forehand to backhand, the racquet face will be slightly tilted backwards and hit the ball with an under-spin, just like in tennis. (You will have to torque your wrist if you want to hit the ball flat. This is teaching the off backwall return . It works best for beginners who are learning how the ball is bouncing off various sidewalls at differing speeds and heights. As your students get more skilled in the technique, shift to using two and then one bounce. This way, you are stepping up the challenge and sharpening their skills. Then, swing it in a top-down motion and into a side arm movement like you are skipping a stone over water. Upper arm and shoulders Make your shoulders square, the blades pressed in, pointing your elbows at an imaginary ball in front. Then do your swing in slow motion, pulling your arm out and around with your shoulder. Penalized hindrances can also be a cause of losing a rally. Other actions that may place the player on the losing end of a rally are carrying the ball using the racquet, not utilizing racquet cord for wrist safety, switching of racquet hands during the actual rally, and allowing the ball to hit the uniform or other body part. When a served ball initially hits the front wall and then on the rebound phase comes in contact with both side walls before making a bounce a three wall serve is called. An out of court serve takes place when a served ball hits the front wall first then before striking the floor it goes beyond the court area. Due to the competitive nature of the sport there are times when each player battle for positioning. This can then lead to one participant hindering the other s chance to hit the ball. In such cases hinders or penalty hinders can be called. Hinder is defined as the repetition of the present rally. On the other hand, a penalty hinder is marked by a player s effort to not execute an avoidable obstruction which leads to the stoppage of a rally.