Does Racket Weight Matter in Squash?
YES, racket weight affects how the racket feels, but it's a very personal thing.
There is no doubt that a heavy racket can produce more power; it's simple physics. But in the real world, a heavier racket is harder to manoeuvre, which then means your timing might not be right, which then means your control of the ball is worse. Having a light racket doesn't suddenly mean you will have perfect control either. What you really need to do is find a weight AND balance that works for your style of game.