When would be the time to switch to a new, heavier, racquet for an advancing hardhitting junior? In my case: my daughter 14 years old, hardhitter, just starting to grow fast, plays for the last 3 years with standard lenght 270grams /9,5 oz? unstrung weight racquets. Solid strokes with easy racquethandling. I'm convinced she can handle heavier racquets easily, but dont want to risk injuries. What's the best thing to do? - Experiment with leadtape? - Try a heavier racquet with similar swingweight? - Demo different racquets and then try the racquet she most likes? - Other?