You have to teach your children at a very young age right from wrong and when to say OK or run. You have to give them a reason to give you trust. If this is done and you continue it through out their growing up years then you shouldn't have to hover.
Too much hovering may cause a child to become distant and keep things from you which in return will cause a hovering mother or parent to wonder if their child can be trusted.
Show them love, honer and trust. Make sure your time with your child is quality and give some of yourself to them instead over them.