PS - Here's the best and most sobering video I've seen from the 2011 Mac:
Yeah, that's intense! I've been on Michigan many times when a storm blew through. It comes on you so fast you barely have time to prepare. But nothing I've been in was even close to that!
The first sailboat I was ever on was called the Rubaiyat. It was an old Alden (I think), built in the mid 30's. It won the Mac twice, in '36 and '37. In one of those years a violent storm hit the fleet. I think they started with about 50-60 boats. Only 8 finished. The Rubaiyat had one crew who worked full time mending sails. At one point they pulled into port to sit out the worst of the storm. Then they headed back out into weather most of us would never sail into. I read the story years ago in a Chicago Yacht Club history archive. It made sailing on the Rubaiyat even more special.