I think almost all modern bindings have asym highbacks. Even if they look symmetrical, the flex pattern usually gives more in one direction than the other. I've heard people saying that you don't need to rotate (ex union mounting guide video), but I still do it because I think its the best of both world's; tip to tail movement for buttering and stiff heelside response.
Edit: Hmm, now that I thought about it some more, perhaps I'll rotate less on my back foot to see if it gives me better ollie response. Edit: nevermind, that makes no sense for duck stance.
Last edited by doron; 11-01-2011 at 02:10 PM.