hey guys, I've noticed that in wrestling, whenever I got a single grapevine in, I can be rolled over pretty easy on the side Im grapevining. How can I prevent this? If I get double grapevines in, then I can stay on top because I'm stretching them out, preventing them from doing a reversal or "umpa" as its called in BJJ. Also, what is a good way to pin a guy with the arms from double grapevine position? Headlock, underhooks, overhooks, and what about head position?