I used to take one-on-one sessions at the Stott studio, until I discovered that a couple of instructors recommended to me were not as qualified as I was led to believe. It was also disappointing that my instructor(s) would socialize with each other during my paid private sessions. I did not like it that I was being charged full fees for non full-fledged instructors and did not have their full attention.
The Pilates, although refreshing to learn these new and fancy exercises, was not that effective for me. I have discontinued and been more successful with help from sports experts and developing core strength with other forms of exercises.
My understanding is that Stott consults with sports professionals, that it seems prudent to simply seek advice directly from sports specialists. It is also important to note that pilates instructors are certified by the same facility that trains them--It is not an independent certification.