We don't have so much trouble with parking at construction zone as there is bit of security because of safety regulations.
However parking to loading areas of shops etc. is problem and I have seen some creative solutions.
Take packing plastic and strong tape, wrap whole car into it and leave friendly note.
Take chain, attach it to car and pull it with your 64 ton Scania to some proper location, it does not matter if handbrake is on, it won't be for long.
One that was my favorite, when there was lot of snow and yard had to be cleaned from snow, there was some small car parked illegally, guy that had to clean snow put all snow top of that car and it was so much snow that car could not seen under that.
People are lazy and ignore to park right, we don't have much of space problems here