Andy's procedure is basically what I was using to help my old FSAE team setup their new car with the R25Bs. We used a figure-8 skid pad per FSAE skid pad event specs. I like it a little better than a standard O skid pad, you can help make sure that the car is even in left vs right and you aren't totally screwing up the transient response without stopping and doing another drill.
I like that idea.