Dr. Al Grogan:

When the question was put to me, I advised that while one can turn off one coulter, when one turns off a couple of coulters, one should create something that one is declaring upfront before one ever has an inspection. If one knocks off three coulters or does a split on that particular run, one should move the GPS a couple of metres, then one is clear. One should not try to recreate it after the event. If one is drawing a line for a temporary split, the location of the line is not very accurate. My advice is to turn off at least another two coulters.