I don't see a problem. Instead of a giant skating screen under-ice printers could print out new pages and gently slide them into position under the ice. If the paper ever filled up the ice rink the font size could be reduced; when it becomes too small to read even by hockey players with their face being ground into the ice the ice could either be ground to a magnifying lens or replaced with such a lens. Max would probably fork over the money to do this.