Ah Coff,
Dr Hugh Hunt used that same analogy when he lectured at Cambridge RAeS on the bouncing bomb. He was assisted by one of his female researchers/students. Sorry I took my eye off the ball so to speak so can't recall much of the theory.
On a serious note I benefited for many years from the free use of service sports facilities. Swimming pools all over the globe in the 60s, The golf course at Oakington in the 70s (all maintained on a self help basis by members) Only recently did I hear how the sand for the bunkers was diverted by my dad from the firing range.
In 2000 and something they began to charge us civilians for the use of the Gym at Wyton. I still have my card with authority to draw the keys somewhere.