Overhooks have been a major part of my own butterfly guard game for at least 15 years now, and especially in no-gi, where you don't have a belt to grab. As a consequence, I've developed what I believe is a very good system to sweep or submit virtually everyone once you get the initial overhook.

Because everyone's awareness of the sweep threat is so high, the triangle ends up being one of my highest percentage moves from the position, and indeed one of my highest percentage set ups, period. I hope you have similar results with this sequence, integrating it into whatever it is that you're already using effectively from butterfly guard, whether it's gi or no-gi. The beautiful thing is that these techniques will work just as well in the gi, provided your partner grabs an underhook. As always, let me know how these techniques are working for you!