Many players use the chicken wing stroke. This stroke actually makes the shot bad. The elbow thrusts out of the grip and away from the body. This is because the cue ball is in alignment with the target line. A player needs to have correct shoulder and elbow posture for the correct alignment. This is important for sinking the ball.
What is a correct billiards stroke? The upper arm should be next to the upper chest especially the part below the armpit. This is required for a perfect alignment. This will make sure that the elbow, the shoulder and the wrist are on line with the target line and back leg.
Billiards glove: You can use billiards glove in such a case. The gloves will not fall even if it's a chicken wing stroke. The glove won't slip out.
Chalk cube is also similar. A quarter of chalk cube will be fine. It works well and even if the upper arm is not in alignment, it can still work fine.
For a good stroke, the skin of the upper chest and upper arm should not touch each other. You can train all the muscles in your hand, wrist and stroke arm at the same time using Doug Carter's Stroke Trainer. However you need to use it properly.
Once the stroke trainer is properly setup, you will feel tightness between the chest and the upper arm. The accuracy of your strokes will increase greatly if you can hold a quarter in your armpit. This quarter should be held throughout the stroke. This may seem awkward and weird but it's a great way to improve your strokes!
