When I was Youtube'ing my way through, another tip I saw was that you can spread the rice flat on a plate, cover with clingfilm or plastic wrap and flatten it into an approximate size of a nori sheet. Let it cool a little and then upend the plate so the rice separates, put the rice side on the nori, and remove the plastic. Seemed like a great way to cool things down. All this talk has me ready for some maki. I'm going to make some tomorrow.