As I've progressed in my jiu jitsu training, I've been attaining the mount position alot more often in my rolling sessions. I have a problem once I get there though. Most times, especially if the guy is advanced, the guy ends up rolling me over and coming into my closed guard, or knee-elbow escaping to half guard. I'm timid about trying for chokes because I already know the guy is going to block my arm and foot and roll me over, and the same is true if I try applying an americana. Just wondering if anyone has a move or two that they like doing for keeping the mount and finishing with a submission. Thanks for the info.