I use ratchet straps. Chain and bicycle locks are easily defeated by a hacksaw. If thievery is likely, it is best not to leave the stands out. 2bird is exactly right, only honest people pay attention to locks.
As far as hitman's situation is concerned, somebody was setting a trap for you. They intended to hurt you, and had no consideration for your life.
I own a small plot of land, yet I still had a lock on stand lifted. Unfortunately, in our present society, it does not pay to trust strangers at all.