Contains an excellent discussion of weather patterns that applies to LI as well. The Yahoo list of windsurfing WWW servers. World Windsurfing Directory. Some nice pictures from Islip by Kenny Nevor. Map to Moriches Bay sites .
Red squares mark places to try.
Turn south on Belleview Ave. and drive to the end. Parking is free all year and the rigging area is a nice mowed lawn. At low tide you should wade out past the sand bar about 100 yards off shore before starting. In the summer there can be considerable boat traffic in the channel about a half a mile out. Across the bay there are some nice flats behind Fire Island.