10-10ths Motorsports in an independent club that holds track days around the Midwest. With only three run groups, they have a few rules that differ slightly from a typical Porsche Club event. (For example, in the Advanced group, point-bys are optional.) It sounds scary at first, but 10/10ths has an emphasis on comaraderie and sportsmanship and Bill and his crew run a great event! So try them if you want to run at Putnam Park, NCM or Mid-Ohio.