I generally use a toy cable cafe lock if I leave bike outside a supermarket, more because it makes me feel better, not because I think it would stop it being nicked. I don't bother on a garage forecourt - which is where I'll most often go. In Australia I never used my lock as pretty much every shop I visited had a forecourt.
I don't leave the bike alone for long, but it would be long enough for it to be nicked. If somewhere looks dodgy I'll try not to stop, but that's not always an option. And I take my vital stuff in with me - money, passport, phone, etc.
I do the same on an ultra as on a UK audax.
I generally use a toy cable cafe lock if I leave bike outside a supermarket, more because it makes me feel better, not because I think it would stop it being nicked. I don't bother on a garage forecourt - which is where I'll most often go. In Australia I never used my lock as pretty much every shop I visited had a forecourt.
I don't leave the bike alone for long, but it would be long enough for it to be nicked. If somewhere looks dodgy I'll try not to stop, but that's not always an option. And I take my vital stuff in with me - money, passport, phone, etc.