We have a local rink in our town and I volunteered for years as a "hoser," part of a crew of volunteers that would shovel off the rink late at night and then sp

We have a local rink in our town and I volunteered for years as a "hoser," part of a crew of volunteers that would shovel off the rink late at night and then spray a new layer of ice so that the kids would have a fresh surface in the morning. Every year, without fail, a local engineering student would show up while I was getting setup and ask if they could test their new "backyard Zamboni" on the rink (e.g. some variation on an upside down propane grill on wheels) and I would watch as they learned the painful lesson that there were not 20 MPH winds in the lab.