Where do you play hockey? Sand and dirt in the ice? I can see where you are coming from when it comes to stuff on the rubber matting, but quite frankly that's not a big issue where I play. They bring out the Zamboni style floor scrubber every morning. Sure I step on things every once in a while, but when I do that's the nicks that I am talking about. That's when I do sharpen my skates. I am careful though. It's such a pain in the butt to replace steel and try and get them rockered properly, that I am very careful and protective of my steel. I go to great lengths to avoid getting nicks and having to sharpen all the time.