then again maybe its your technique.
if your a men in unit, you can always ask your sergeant if you can
go there or he accompany you to go there just to train the swing
trainer every day like during evening before meals etc....
but if you in BMT, i dun think you have access to the SOC obstacles
as it is dangerous to go alone, let alone you a recruit. so then
the best is when you go out in weekends, go to your jc, poly or
playground or sec sch and train using their monkey bars.
use the 1 bar 1 hand technique or try the 1 bar 2 hand technique
(for weaker people), i.e. left/right hand on both starting bar,
then left hand on next bar, then right hand go over to the same bar
then left hand again to the next bar, etc.... 
