Somthing I read a little while back is that it seems there are a number of people that, before they even throw the ball, they throw it on a spinner and "change" the surface. Even if the box surface is 500/4000, they'll apply that surface themselves. That way it's a surface that can be repeated easily, because 500/4000 from the factory is still different than 500/4000 on a spinner or any other method. A Haus would be close though I think.