Seems to me that the biggest problem is the lack of quality, modern facilities at RAF stations. You have to make it accessible. The majority of people take the easy option. Take the Lincolnshire clutch for example: if you don't live at Cranwell, you need to drive up to an hour (from larger
frontline stations, to use a 1980 vintage pool). If you want a fitter, more physical Air Force then invest the money in encouraging them to get fit. Yes, it costs money to run a pool, a gym, tennis courts, running track, pitches etc, and yes (beancounters may struggle here)
it does not generate measurable financial benefit but it generates fitter, better motivated, healthier airpeople (yuk). And don't throw it open to Joe public to try and make/save money. Keep it for the Air Force and dependents. You have a captive audience of about 5000 people right there. It's not like the rural locations of which the RAF is so fond have the support facilities for the extra people. (And don't forget the Med centre and dentist while we're here)
Compare and contrast the facilities available to US Air Force personnel and their families with what we have (next time you're on det and you can spare some time from the JPA actuals paperwork at the end of your day.)
Bobbins