We did a couple trips years ago on the Big Manistee that were fun.  Spartan1 would remember more details than I would about camping opportunities, but we did stay at a small campground for one overnight.  

Last year we attended a paddling seminar and saw a session by Doc Fletcher.  Bought his book entitled Michigan:  Rivers Less Paddled

It has a lot of interesting river trip experiences in it.  I also see that he has another book called Weekend Canoeing in Michigan.  Haven't read that.

This one is from Arbutus Press in Traverse City.