I have done it for years and I think its a matter of being patient - go out there every half hour while the sun is on it, spray with rubbing alcohol and wipe until dry with paper towels, rotate the ball a 1/4 turn and repeat. The performance is noticeably better - hooking more marked and the snap at the end is very much better. In the winter I do it with a cardboard box and a hairdryer set on low in a hole in the top of the box. Spray with the alcohol and wipe it all off - in an hour its fine. Certainly a lot cheaper than the $35 to get it done at the pro shop.I have always gotten oil out of my ball by sweating it (either putting it out in the sun or in front of a light or something like that), but I heard that you shouldn't do this as it can be bad for the ball, especially the core. Any ideas? :?