Okay, so a group in the city where my rink is wanted to make an outdoor rink for a special ice festival event this past weekend. They laid down a plastic liner, recruited the fire department, and basically tried to fill it up like a wading pool and let it freeze instead of laying down thin layers. Of course the water burst free, ran downhill like a little tidal wave, and flooded the street. I wish I could find the news footage to link it - it was pretty funny. I think the event has been postponed indefinitely.