I have used it pretty often and I really like it. From your guard you first hook the beginnings of an omaplata, leg over the shoulder. Now when you first hook it up, you are perpendicular or heading in that direction. Most finishes or rolls occur when u then switch to a parallel position and sit up. I prefer to stay perpendicular, hook the instep of my foot that is oma'ing under their chin, face, anything, and use it to gain leverage. Then very quickly, I straighten the arm out as I swivel my hips and gator roll on to the top of his arm. Very effictevely armbarring. Please, critique, attempt, burn, congratulate.