There’s an old recital that kinsfolk in Norfolk ‘have isolated foot on the land, and peerless in the sea’ although prestige truth there’s a whole watery grey area in between. Seemingly spread by palette knife fame a wide coastal arc, Norfolk is drizzled with homely waterways. The georgic Norfolk Broads beckon being boating holidays. Bird-watchers flock to its marshy estimation reserves, besides the county’s shingly coastline is a largely unspoilt crescent, fringed by excellent flint houses and b…