In order to be certified, and be able to write the RAC exam, you must do 60 pairs of feet. You should do the same pairs more than once, in order to see a progression.
I'm 49 pairs in. As I write, I'm waiting for number 48 to arrive. I hope that I can keep the pace up, and fit everyone in that wanted to take part in my case studies.
I think everyone is enjoying the free foot attention. :)