I was ploughing at a working day recently and next to me was a man with a Fordson N and RSLD with YLs. He was using stubble chains but no skimmers. He was leaving more straw exposed than me using skimmers. I stress that this was not a match but, had it been one, what would the view of members of this forum to have this person as a competitor ploughing against them under SOP rules and what action would be appropriate ?