Since Thunder Bay & Nova Scotia are 36 hours drive time apart, I realize that we aren't all gonna get something within a stone's throw....so I've picked listed 3 different campgrounds (area's) - please vote & whichever gets the most votes will be the one I go with - as they are all within 16 hours of me (and yes it's all about me!)
#1: http://www.lafontaine-ent.on.ca/ - This is in The Georgian Bay, Ontario Area (I saw your Batchawana Bay Idea Calamity - but the area is the same - we can pick the campground next if this is selected)
#2: http://ontarioparks.com/english/slee.html (Thunder Bay, Ontario Area)
#3: http://www.narrowscamping.com/ (Maine, United States)
Okay, pick the area most convenient to you, and we'll go from there!