What would I do if I were returning to tennis coaching after a multi-year hiatus.
Tennis is becoming technology-driven, and more player-focused than ever. In the '70s and '80s we considered ourselves high-tech when using video cameras for analysis. While video is still useful with more up-to-date technology, I'd look at integrating advanced tools like AI and wearables while prioritizing mental and functional training, and adapting to new rules like off-court coaching.
Tennis wearables have become integral to modern coaching and player development, offering real-time data and analytics to enhance performance, technique, match analysis, health monitoring, and injury prevention. These include racket attached sensors and wrist worn wearables. You might add these to your previous teaching methods so you can align with modern trends.