how to improve the joystick?

[Karmashock]

Ok, I've been gaming on my 6700 lately and the joystick is not acceptable for it as i can't get enough traction on it. I'm thinking that what it needs is some kind of slip on or clip on device that makes it easier for my thumb to keep control of the joystick.

For this it either needs to be taller which would give me more leverage on the stick or about three to four times wider


I'm looking for something I can just make myself. Does anyone know of something that fits over the joystick perfectly that I can then modify for this purpose?