If they could find a track close by that ran on Saturdays to partner with it might help. It would give the racers two venues to race at every weekend. More people might be willing to give it a go if they weren't restricted to racing one track once a week. Brownstown, North Vernon, maybe Clay County Speedway in Flora? They struggle to get more than a dozen non wing sprints on a regular basis, maybe winged cars might draw more.