I use
SailFlow. They were off for Lk. St. Clair Sunday, but not
that far off. And, IIRC, they had the direction right. (I use the St. Clair buoy data, mostly.)
We took friends out Sunday.
Perfect day for a sail out there!
Put the #3 up and a reef in the main. With 1' seas it was a very pleasant ride. Later on, as our guests became more comfortable with the idea of heeling and the wind dropped from about 15 kts down to 12 kts or so, I shook out the reef.
Jim