Well, I found an interesting launch that I don't think was on the list: South Shore Beach, Milwaukee
The launch is good only during NE wind. It offers a protected "lane" along the shore with a break wall that stretches for a couple of miles. The swell has no chance of entering that channel unless a couple of spots along the wall. If the swell is big enough, what enters for a short distance are perfect clean ramps for jumping. Otherwise, this is a speed-windsurfing paradise.
Yesterday, the gusty-stupid conditions had to be in the 35/40kn while lulls were barely above 20kn. All this topped with constant annoying rain. Positive was the temps that were in the lower 50s and water that was still warm. The local crowd consists of friendly kites and wings mainly.
That was not a fun session but an instructive one for next time: I think I found my flat-water speed-breaking spot near home. Next good NE and I'll be there trying my best!