Attended a swim clinic taught by Hap Gentry this morning. After a few warm-up laps, he filmed us in the water from multiple angles (both from the surface and underwater). We then had a short lesson on swim dynamics and he hit us with a few drills.
After the drills Hap reviewed the video with us, evaluating our stroke and making suggestions on how to improve. It was definitely an eye-opening experience - the video doesn't lie. He quickly pointed out some ways I could improve. I highly recommend watching yourself swim. You quickly learn how what you feel may be very different from reality. Great experience.