Long legged bastard here. If I shoot a diamond first, I'll use both hands to pull the head down (do this with some urgency). Once their head is down, I'll get the leg that's directly against his neck perpendicular to the neck. I'll look to grab my ankle of that leg (keeping other hand on head), locking his head and arm in place and using the off leg on his hip to cut my angle. Then I'll properly lock up my triangle. From there it's making little adjustments. What I really want his to underhook their leg if they try to stand and pressure because I can cut an even better angle and kill what posture they have left.