symmetrical hurts a ski, not helps. Since they're rockered it works fine, but normal camber symmetrical skis are a fucking joke.
But 2 up, Alpha's/ Rockers aren't that similar skis at all... Alphas are more of a jump ski, while rockers are completely made as a jib ski(obviously still usable on jumps)(the camber on Alpha's and the shorter rocker is what makes them jump skis IMO). If I was wanting a ski more fun for buttering and jibs I'd trade my Alpha 1s for Rockers no problem.
so........... no trades for green lifes? ;)