2 Part Technique - While playing Butterfly, keep in mind that your opponent can pounce heavily onto you, flattening you back onto the side that favors his underhook. Anticipate his shoulder dive and meet it head on with your own shoulder, by crunching forward and bringing your shoulders in front of your hips. Before he has a chance to redirect your Over Under Control to the side that gives him a strong passing underhook, escape your hips out to the side of your underhook as you fall to the mat. This will allow you to be in prime position for the Hook Sweep.