On Sunday (24-Aug-14) I went out with my brother and a friend, Mark, on a beautiful day for a sail on Lake Michigan.
I also took the ALS Ice Bucket Challenge while sailing.
We headed straight north and ventured into Wisconsin waters.
Our SOG (Speed Over the Ground) was ~6.0 knots while sailing north.
After we tacked and headed south again the wind let up a bit and we were heading into the waves. Our SOG was ~4.0 knots.