You don't lock your coop up at night? your asking for trouble, predator type trouble. they come in every size and their everywhere. your rooster will not hurt your hens, well if he does get to rough the most that would happen is they would lose a few feathers on the backs or wings where he hangs on at. But he will not harm them, he's there to protect them let him do his job. ...
sounds like an over protective mom..you know how I know cause I am one also.