2 Part Technique - Securing the Seat Belt would allow you to dominant the position, but establishing the control is not always the scenario. You know the opponent cannot roll into you, so be prepared and anticipate his escape away. Once you feel the start of his roll, jump to Knee on Belly on the far side. The opponent will commonly leave his arm loose for a Near Side Armbar during the transition. If you missed the timing for the first counter, Knee Pivot with your far knee instead. You can try a North South Choke from your knew position, because the opponent might be focused on the Half Guard and forget about his neck.