I don't know about you, but I've inadvertently belly-flopped off of a high-dive once or twice in my life... and I can still feel the pain. SO MUCH SO THAT YEARS LATER I AM HAUNTED BY IT as I watch this video of these people actually COMPETING to win a belly-flop competition!
Look, I get that different people like different things... but I can't see any good reason why BELLY-FLOPPING is a good idea. At all.
The pain. I can still see the sheer REDNESS of my torso in my mind's eye. Ouch.
So watch. And try not to feel the pain.