What's the grass aerodrome to the NW of ABZ? It's near as dammit on a long final for 16, around the outer marker I seem to recall. It has two strips in a cross layout, possibly with hump.
I used to fly over it regularly when I flew ambulance flights from Shetland.
600 m remaining at the pipe place huh? Maybe they'd let you use it if you ask nicely. In an Islander I could manage 1/3 to 1/2 of that length if lightly loaded
but 600m is ample for a C182.