If I ever write a book about management, my first rule will be:
If you don’t trust your experienced employees, then the only people who will want to work for you are people who know they can’t be trusted.
Unfortunately, that’s the only rule I have, so the handbook will probably have to wait.
Just pad it out with unverifiable anecdotes and folky chat. It would still have one more piece of sensible advice than most of that ilk…