Not sure about the rest of the country but at a certain AT base in Wiltshire there are a lot off sections already doing PT 2 or 3 times a week, FSW(Supply), 1AMW (UKMAMS) & MTMF for starters. I might have even missed a few but these seem to take place during the working week either 0800 start so the place of work is on skeleton manning till approx 0930 or 1600-1700 seems to work and people are quite happy doing it in the working day.
I know the flying Sqn's can be different but how about getting exercise bikes/treadmills/rowers on the Sqn's for people who can't leave work (as per 2 Sqn's I have worked on) and the lads doing a bit in work time when it's quiet, seems like we're all having to accept the higher levels and the possibility of twice a year, have also heard a rumour it will be done the same day as CCS instead of getting away early from GDT, you turn up at the gym at 0800 then go to the Rocks afterwards, Green card/Blue card all stamped the same day (possible solution??)