I would say no. I'm currently riding a pair of volkl walls with about a 6" by 2" piece of topsheet missing, and they ride fine. It will probably affect the longevity of the ski, because it lets water in, but other than that, it shouldn't affect performance imo
I AM DEREK_S'S ALIAS
looks like a chocolate chip shotgun went off in there.
Fuck yeah you can fuckin' say fuck. I fucking love to swear.