I've got a dilemma and need some advice. My daughter strings for her HS tennis team. Her best friend (and customer), a hard hitting topspin baseliner, goes through strings like crazy. She plays with an APD, PSGD 16 @ 60#. A little while back, after dropping off her 3rd racquet in the week, her mom asked for something more durable. I had some poly laying around and we strung her with Cyberpower mains @ 53# and Forten sweet 16 X's @ 58#. She really liked it. It proved to be durable and she wants that set up from now on. The thing is that this kid has had serious arm issues for a couple of years (mostly wrist and forearm) and for that reason I was really hesitant to try it to begin with. She's a nice kid and I don't want to contribute to bad health issues. Is the setup she wants any harsher than PSGD at high tensions? Any other ideas? Personally, I think the stiff racquet and 41/8 in grip are also contributing to her problems. I have limited experience with poly's, I fubar'd my arm in an accident a couple of years ago and can't play anymore, so I can't test myself. Useful advice is appreciated.