I also use Magic Carpet and like what it does for me, as far as not having to squeeze the ball to hold onto it. However I have been having issues with thumb swelling starting around the middle of the 2nd game on... I've been EZ-Sliding my thumb 2 out of the last 3 weeks to help eliminate sticking. I'm thinking what I need to do is sand out the thumb hole a little bit, then add the Magic Carpet, then add tape... then take the tape out as my thumb swells up.