One factor not covered is that someone passing through (like say, from
BC) has to have a convenient way to purchase these extortive decals, I
have no idea which areas are covered by them or not. When I lived in
New England one reason I went to Nova Scotia each year and skipped Maine
is that every state park had an entry fee and as I drove up the coast I
did not want to pay what was designed as a day fee to just check out the
birds quickly and move on.

Arthur Berman
North Vancouver, BC