It was our experience that they almost always were on the move. As mentioned we have seen them come right through a bunch of boats trolling or motor mooching and I can't recall anyone trying to run away from them. However, that being said, if DFO was in the area and you didn't make a reasonable effort to keep the 200 yards distance I suppose they could ticket you. I think the basic rule could be just dont chase them at any speed at all. But who knows, if DFO finds you are not Canadian it could be "get out your wallet time" ?