Ripper
Hall of Fame
I'm a huge fan of these for practicing all kinds of spins. Nobody sells them where I live. Because of this, I'm thinking about mail ordering some. For example: "Penn Radical" balls. The thing is I like to mail order ONLY when necessary. So, I have been painting half of my practice tennis balls with red permanent markers. The problem is that this ink is far from permanent. It's really a mess. What else do others use to paint their tennis balls in this way? I've thought about trying out hair and/or textile dye, but haven't yet.