the bungee pulls the cars outboard, not inboard. You don't need the bungee, but you do need the outer turning blocks with some mini cleats.
The bungee pulls the cars inboard, not outboard. The line through the cheek blocks pull the cars outboard to the corner castings.
You can get away without the bungee pulling the cars to center and letting the tensioned jib sheet do the job. I liked the positive return by using the bungee.
