Originally Posted by
donalson
on tour I'm planning to bring an old cable combo lock that I've had for about 25 years... it won't stop anyone but it'll slow them down.
That is also my philosophy. Professional bike thieves will cut through just about anything very quickly. However, most opportunistic thieves do not carry bolt cutters, hacksaws or battery powered angle grinders; and a stout looking cable is usually enough of a deterrent.