This drill introduces rotation into the stroke. When swimming a long distance front crawl stroke, most of the time the swimmer should be on the side. with rotation of the body on each stroke.
This rotation is lead by the lead arm, with the recovery arm following this lead.
This drill can be swum as a progression from the Shark Fin drill changing arm every 5 meters initially, and then progressing into changing lead arm each time
Key points to note are :-