Von, unfortunately thing like this do not become an issue until something bad happens. At that time the lawyers start reading all the fine print. It even matters what type of chains, straps, hooks, etc. It even matters which way the hooks are hooked on the chain. As far as, flat beds, tow trucks, that is what I did for a living until a few months ago. I see many people around here that don't have their loads properly tied. I even "know" /w3tcompact/icons/eyes.gifsome people who have done this, won't mention any names.
As far as the local police they may not know or just choose not to enforce these laws. Can't argue about the laws there but I bet the DOT man there can tell you.
Many people don't even know the DOT "police type " not road crews are out there because they don't stop anybody except trucks.
The DOT MAN will be glad to inform you, sometimes he will even charge you for the unsolicited info. /w3tcompact/icons/smile.gif
It would not hurt for anyone to make a call to your local DOT not the local police.