Stephan Haupt suggested moving the two driver cars away from the starting area. That worked out much better during the second run group.
The grid is along barn B. That barn has a pass-through near the middle. I propose to grid two driver cars beyond that along the barn side. Then grid everyone else on both sides moving down the hill. This will keep the area clear where car come off course and allows room for more cars to stage, keeping the event moving.