Iv thought long and hard about this over the years and Iv come to 1 conclusion.Large tidal common Reed marshes such as Humber n Tay provide a lot off food in form off starch in rhizomes plus fatty ducks geese and fish in the estuary .In the case off the Humber some off these habitats can be 50 miles inland and a mix off sea and fresh water habitat ,id guess this offers higher prospects off survival than a purely coastal environment. A good canoe knowledge off low tides and shifting sands be abs crucial, I don’t know the figures but the biomass for common Reed phragmites here must be huge. Offcourse I doubt the legalities but I started this thread purely for fun what habitat do u think offers highest prospects off survival in the U.K?or Europe even .