The worry is mainly that after a "stuffing" type situation, one might get washed over and missed in the confusion. If running with drain socks down (as I sometimes used to) there was the potential for a loose hank to get washed down and left flapping beside the prop.
My biggest concern was that careless crew would leave an end or coil on the tube... If they were tied up and visible, there was nothing to fret about. It looked more "Bristol fashion" too