jefmcg
Guru
I've got one of these on my top tube. Leave it on wherever I'm parked - decided that taking it off is too much hassle. It's usually got something slightly stealable in it: reading glasses from poundland, electric tape, red tail light (today). No one has ever taken anything from it. I think a CO2 cylinder or two would be completely safe, locked in a secure compound.
(if they are missing one evening, then you will have to find another solution, but as long as you don't get a flat on the way home, it's not been an expensive lesson)
(if they are missing one evening, then you will have to find another solution, but as long as you don't get a flat on the way home, it's not been an expensive lesson)