We are also residents of Washington, MI in northern Macomb county. We took delivery of our 240EX in May.
We boat primarily on Higgins Lake, but have made it to Lake Orion and Table Rock Lake so far this summer with the new boat. The National Crowndezvous was great (two boats from MI made it) and we really enjoyed meeting many of the folks who hang out on this site.
This weekend we'll be at Higgins and might try out Houghton Lake as well. Looking forward to meeting more Michigan Crownies.
So many lakes...so litte time. 
Sam M. Migliore
2008 240 EX - 350 MAG/Bravo 3 - Moonstone/Moonrock
“HaCrowna Matata”