The other most important thing is you can go slower on the 20m, because that accelleration is less important, you wil be turning soon. You can’t gain much time in those 20m. In the 60m you need to go the fastest as you will be going at that speed for longer. Staggering your efforts will see you finish faster than if a resonant of the same fitness level maintained an even pace/acceleration.
I really do not believe that is the best way to turn. That requires you to a) stop 100% of your momentum and b)start again from a standing start. Terribly depleting of energy and very slow. Either a more rounded turn or the backwards turn is surely far more efficient.
