Sorry but i had a hard time figuring out how to post this - click on each page in order
a must read if you are considering rocker skis
also the section on width underfoot is very informative to understanding how that effects ski performance
Note that Mike Porter that wrote this has been on the Psia's national demo team and a long time product manager for K2 skis so he probably may be the most educated person in the US if not the world on this topic.
if You French Fry when you should Pizza you are going to have a bad time