That guy and his props are so funny!
Thanks for reminding us about this video. I am going to have to try some of his drills, because although I used to do Pilates, and consider myself to have a strong core, I don't seem to be translating that to swimming most of the time.
I get a big kick out of the hats/props he uses. I think that he kind of misses some points in his discussion about the physics involved (he says where center of gravity typically is but omits to say where center of bouyancy is I think, and there are a few other nitpicks) but, overall he does a helpful video.