Team,
You do have a first choice on Lake Erie and that is Sterling State Park. Just north of Monroe and it has both a boat launch and camping on the same lot. I can't say much for the camping there, it just isn't our style (Big open space). It will not be cheap for a non-resident, but what is these days.
If there is something on Lake St. Claire, I don't know about it.
Matt
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.