Keeping a slave at home is a big responsibility and a lot of work. He must be constantly disciplined and kept busy. In any case, you should put him in chains to limit his mobility. A few lashes now and then will be necessary to make him do what he should. His place is on the ground and with water sports this place will be made clear to him. Of course his slave cock has to be kept in chastity and may only be freed briefly under observation in case of particularly good behavior. And naturally he has to provide his holes obediently to his master.