I pivot to the side bringing my left knee up (two pictures for this as it's a funny position ) normally you wouldn't want your right foot to be up on the toes like that, instead go instep to floor and put some weight on it, this is rather unplesant though and as we where holding position for pictures I was nice
I've seen something like that before, but this seems like it would be hard to pull off against a trained grappler. Have you had any success in this while rolling?
Yes, it doesn't happen often, but it does work. Think of it like a spinning back kick, over used it is useless, but when the time comes it is a nice surprise for the other guy.
It is also a low risk move, you don't give up postition to attempt it like you would with something like a arm bar.
Also, a technique doesn't have to get a tap to get a submission, by forcing him to defend I start a chain which can lead to something that does end it.