I prefer the stacked, but I would like for you to change the symbol. Keep it away from surfing, skating and biking. For example Nike or even Quiksilver these logos have nothing to do with shoes or surfing.
So sorry, ran out of time and the contest has ended. I can submit more concepts, but you would have to put me in the first position to do that. It's been a pleasure working on your logo and would love to get it perfect.