Similar story ... Ardnamuchan Peninsula for me ... Parked well off-road and sheltered from view from just from each side and behind ... Kampa Kazi outside beside the van, nobody in sight for miles, droppum breeches and squat upon plastic bag lined loo, ahhh blisss (there's definitely something nice about having a dump in the great outdoors) chugga chugga chugga ... an effing big fishing boat comes sauntering along a few yards offshore ... erm, breeches pulled up past my knees and lean back against the side of the van trying desperately to look as if I'm casually sitting in the sunshine!
Fortunately, my body is wider than the Kampz Kazi so it wouldn't have been seen that the lid was up, but I forgot to hide the loo roll sitting on the doorstep, typical.