Windsurfing & Stand-Up Paddleboarding in Michigan
7/21/18: Please use WaterSpotr. Most of the links from the Google map previously linked from here were imported into WaterSpotr before it was released for use. The more that participate in its development, the better it'll be.
The Google map previously mentioned here has been deleted.
I'd be willing to help out as part of a group. I really liked your map when I first came across it and started my own with a handful of launches in the Eastern Upper Peninsula.