Not long after my arrival on 23(F) I, as JP, was detailed to go punch some holes in the midnight sky for the 'chinagraph line' with O/W tanks on a Mk6. I elected, for fun, to file airways and entered at Manchester northbound using only offset Tacan to navigate. Much hilarity from ATC as they enquired whether I needed vectors to remain in the airway.
Those O/Ws were BORING! I seem to recall 2.5g limit until empty and your lookout went for a ball of chalk - not that you could do much if bounced
