I am a noob to grappling but did muay thai for a couple years, and now am doing BJJ. One problem I run into is side control. I can't keep it very long against larger opponents (90% of the class), and when I get it I can't really do anything with it. I have no problems getting side control though. Any tips?? I usually try kimuras or side chokes from side mount and I never get em. Also, how do you control the opponents near arm, aside from pushing it up by his head with your hip...when i try this with stronger/larger guys, they get it under me and bench me off. Sorry about all the questions in one post but I'm stoked to find this forum to help improve my ground game.