3 Part Technique - Paul beautifully explicates the finer details of recovering full guard, either Closed or Butterfly, from Half Guard. The key detail that most miss is the idea of bringing your shin all the way across the opponent's body for a butterfly hook, and not just across the belly where it can get stuck. If he blocks the recovery, resort to a Single Leg takedown. The single can also be implemented while under Side Control with an underhook. The finish may involve picking the ankle, as when he squares his hips up with your shoulders, or picking the far knee, in the case of attacking the single from a lower half guard or quarter guard position.