I was thinking about a post by Breakpoint where he says: I agree. However, I also noticed that pros of the '90s used natural gut but strung them upwards of 65 lbs. The rule of thumb is string tighter for control and string looser for power. Hmmm.... I have the low-powered racket - the K90. But I'm using a low-powered string (Babolat Superfine Play 17g) strung at 58lbs. Then I thought about the fact that Ergo, I need natural gut! But since I can't afford it, what alternatives do I have?