From Wick we fly to John O'Groats the northernmost inhabited bit of Mainland Britain (there's a point further north but uninhabited) and over to Hoy in the Orkney Isles. Following the west coast of Hoy we turn east over the top end of Scapa Flow, Brirain's supposedly impregnable North Sea Naval base. Then we continue out North to Westray and landing in Sanday. As i said it was more interesting than I thought it would be!

1'500ft should do it.