Originally Posted by ga tennis
Yes new frames every year. Yes she benefits from poly hybrid
Give it a try in your sons racket.
I replace my kids frame every year, I have a contract with head through USPTA. Kids abuse their frames more, especially boys and with the constant restringing the hoop can be compromised, thereby adding unnecessary vibration to the arm. Do not worry about her arm, you are using a CO poly which is soft, plus the softest string on the planet in the cross, plus at low tension, with one of the best coaches in the country for proper strokes,,,,,,,she is fine.