I have seen Ian's teaching firsthand, and he is an excellent coach. He has loads of technical knowledge, and does a great job of explaining it. Of course this is my opinion, but as someone who has been teaching tennis for multiple decades, I do think its a credible one.Did anyone here buy any courses from Ian? I watched him coach students on his channel and it does not inspire confidence. He is good at the clickbait and matchplay videos, but I wouldn't take him seriously for instructional videos based on his youtube content.