I find wrestlers aren't great in half guard either. You have your weight on their leg and from there you can attempt to do damage. Ovbiously side is the worst to have a wrestler in because chances are they will scramble and get up.
For better or worse, I always grapple as if I'm being scored by the NAGA point system, so I'm always looking to get side control as soon as possible, then get mount, and possibly the back. So being too stubborn and dumb to learn from my mistakes, I often lose control of wrestlers scrambling out from under my side control. =P