Defend the contact point/unit turns are the two most common causes of errors
DEFEND THE CONTACT POINT, THE ARC YOUR ARM MAKES IN FRONT OF YOU.
Keep the engine speeds high and defend the contact point in front of you. Most errors are either coil errors, or contact point errors.
Both are more commonly made in a transition from one mode to the next mode, lull to jam to finish. Most transition errors are made due to slow reactions and jammed engines. We are trained to hit the ball the same distance in front of us, no matter what the incoming shot. That causes a huge amount of mistakes. The correct contact point is not straight wall up/down in front of you. It varies according to the incoming shot’s height. It is shaped like an arced curve. This arc is determined by your own length of arm. Higher incoming shots have to be struck more out front, and lower shots are allowed into the body more before striking your own outgoing shot, due to the length of your own arm. If you place your arm straight out, eye level high, and let it drop, that is the arc you are defending on contact, both at net and on ground. If you use the same contact point on a low ball that you use on a medium high ball, you will net it. If you use the same contact point on a high ball that you use on a medium ball, you will hit it late and go out long. Our best contact point is when our arm is barred out front so the wrist can be locked at contact for maximum consistency, and that point is determined by the incoming shot’s height. Another facet of contact point is the spot in the string bed. It has to be in the right place in the bed. If too low, or too high, the strings are too short, their frequency level of rebound is too high, and there is not enough control. Some like to strike the ball high up, such as 3rd cross down from top. Some like it in the middle, 10th cross down. Most are inbetween.