When I was but a lad in Singapore in from '67 to '69, I was in the Changi troop of the Air Scouts - we were given a Twin Pin when it was retired. As a joke, the groundcrew had made a giant key to be inserted into the side of the fuselage, with 'Turn 360 times for one hours' flight' written on it!
They weren't far off; that beast could easily hover in a headwind!