Re: Boondocking in New Bunswick, Nova Scotia & PEI
In northern Minnesota, Wisconsin and Michigan the many state and national forest campgrounds are your best bet. I'm not sure whether your definition of boondocking is free camping or just non-hookup camping. Nevertheless, the forest campgrounds are usually the least expensive actual campgrounds with vault toilets and available water somewhere in the campground. They are generally the most aesthetically pleasing wilderness sites too. Fees range from about $14 to $0. Around Duluth all campsites municipal or state parks are $30+. I use the Ultimate Campground Project app on my iPhone/iPad. It only tracks public campgrounds.
Walmart, Cracker Barrel, Pilot/Flying J, etc. places to me are for only when you drive until sunset, stop and sleep, and then move on. In Minnesota I don't think stopping overnight at public rest stops is allowed. There are groups that connect private citizen stops like in driveways but I have never explored or entertained those.
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter