I did two in 2009 and will be doing 4-6 in 2010. I race with
Shumacher Taxi Service, which is mostly Philly SCCA guys.
Pix from the LeMons South, Spring 2009 event. STS fielded three cars; an MR2, a Corolla, and an Audi. I was on the 5th place finishing Audi team (there were 95 cars that took the green flag). On page 58/59 of the December 2009 issue of
Grassroots Motorsports magazine is an picture I'm sitting in the #09 car in that shot as we get ready to roll off for the start of day 2.
If you have questions about running an event, or would like to get involved, visit the STS forum (linked above) and say hi or pm me. Between the team's cars we have run probably 12-18 cars (2-3 cars in 6+ events) over the last two years.