I think the turn would be considerably slower due to the extra friction in the somersault. When swimming straight, there is a "narrow frontal profile" and litt

I think the turn would be considerably slower due to the extra friction in the somersault. When swimming straight, there is a "narrow frontal profile" and little form drag but that isn't true when spinning in the water. I wouldn't have guessed the results of this experiment so my slower turn theory is probably wrong as well...