Here I have locked up my Surly LHT while I had dinner downtown. Chain lock secures frame to bike rack and a mid-grade cable secures both wheels to the chain. I’ve pulled my lights and covered my Brooks with a saddle condom due to rain. I realized afterwards I’d be better off with a plastic shopping bag on the saddle so it looked more ghetto. I was away from the bike for several hours while I ate and then went to a pub. My trusty steed was right where I left her when I got back…=-)
This is my medium security setup. The next step up would be a heavier chain and/or two separate chain locks to really discourage a thief. It helps that this bike is relatively unremarkable looking so as to not attract too much attention in the first place.