Hey guys- am wondering if this trick has a name, and if there is any secret to it..

I've seen a couple of people boost really high, and invert their bodies. So they extend their legs straight up and point the board at the sky, and their torsos / heads point down back towards the water. Looks awesome, and I imagine it must feel pretty incredible too. Didn't know how to search for it as I have no idea if it has a name. Am wondering if there is any trick to the technique, or if it's just about getting enough height and making sure the kite stays at 12, bar in, whilst you thrust you legs up? I'm picturing some pretty messed up landings whilst learning this one!

Thanks,
Tom