That's 25 square miles. How many good courses would there be in a 50 miles long, half mile wide strip of coast in Fife, or even around Liverpool, I wonder?
Off the top of my head:
Old, New, Jubilee, Eden, Castle, Kingsbarns, Balcomie, Craighead, Elie, Lundin, Leven
Hoylake, Wallasey, Formby, Birkdale, Hillside, West Lancs, Southport and Ainsdale
There may be others in those (I don't know whether 50 miles gets you up to Lytham, for instance but suspect it doesn't.
Probably cheating to go with a 50 x 0.5 strip and I'm not sure either has the same sustainable quality of that bit of Surrey (though the highs in each case are higher), but at least it gives us a debate.