In theory, I would think that a pearl or polished ball would work better on wood because of the increased friction, and a solid would work better on synthetics with oil being the same. This does not seem to be the case for me however. I have been throwing my primal rage on both, and I have been having a little bit of trouble with carry on wood lanes. I brought out my old reliable Roto Grip Outlaw, and my carry went up immensely on the wood lanes. The same thing happened at the end of the league last year when I brought out the outlaw. I shot better than I had the whole league. Any ideas?