Drills will teach you what you're hoping to learn only if you do them correctly. If you do them carelessly or hurriedly, they won't work their magic. Yes, they do take more time than swimming, but they also pay far greater dividends. Study our drill photos and text carefully, then practice with understanding, attention and a clear sense of purpose to get the greatest benefit. Do it with feeling.
Drills create the most direct mind-muscle connection.
If you're really tuned in, you'll soon know what the skill you're practicing feels like when you're doing it right. If it feels right, it is right, and the mind-muscle connection begins to work more smoothly. The first few sessions with a new drill, stick with it for at least 10 to 15 minutes to firmly imprint the new sense into your muscle memory so you can eventually work by sensation rather than intellect. Experiment with subtle adjustments. As you practice, the main qualities you should be developing in your drills are economy, smoothness, and ease.