Originally Posted by bad_call
if your poly selection dies (becomes arm killer) after 3 hours then you're better off using syn gut or nylon. unless of course you find a longer life poly.
That's exactly right. That's why I'm using natural gut on one racquet and multifilament synthetic on the other as my bad weather racquet.
As I understand it, poly was originally designed with the needs of the touring professional player in mind. That means it only had to last one set. So now they make co-poly to last a bit longer. For me it's still not long enough.