So... I decided to start using that flying armbar that guy uses in that video. It is ridiculously high percentage for a flying submission. I actually tapped my instructor with it tonight haha, it was epic. He was all cool about it too, laughing and everything and saying good job and shit. Of course he then proceeded to beat the shit out of me for 8 minutes straight, but I still caught him .
It's genius how he does it really, everyone always tries to take the arm and then jump into an armbar. He just pulls high guard and swings his leg over to get the armbar right when his back hits the ground. Your hand is already on their arm when you're clinched, no one sees it coming.