A swimmer’s hand entry is important in setting up a good pull. Reaching through the water, rather than over it, helps the swimmer find stable water. This drill uses an audible cue to emphasize the practice of reaching through the water and forward.
With a high elbow, place your hand in front of your shoulder and reach forward. If done correctly, your bicep will “slap” the water.
This is Sheila Taormina’s drill. Here’s a video of her showing us how to do it.