Possible Clues:

• Rocks projecting from ground
• Striking with whip � it shows on the surface
• Very hard to reap anything from this
• It appears, on the surface, to get court involved in a little work
• Offcut of rock appearing on the surface
• Not suitable
• To be 27 across, perhaps, in a rocky sort of way
• The sort of harvest that might be measured in stones
• Protruding or projecting rock
• Rock standing proud