Traverse Bay is a gorgeous place to sail (just a long, although very beautiful, drive to get there). Hobie Division 10 used to hold their divisional championships there sometimes back in the 1980s, and the Hobie 18 Nationals was held there once. The Sharks used to hold their Nationals up there every few years.
Grand Traverse Bay is actually split into two deep bays by a long, skinny peninsula that runs up the middle. I think we have been to events on both the east bay and the west bay.
The most striking thing is the Caribbean blue color of the water -- doesn't seem natural up there in the woods of northern Michigan.