I think it's best if a Bull is physically active in humiliating the cuck. It reasserts the hierarchy and the Bull's control over the relationship. Verbal abuse does work wonders, but there's a primal attraction that builds in a woman when she sees one man physically handle another. Maybe it's just thousands of years of conditioning to reject weak losers in favor of the dominant alpha warrior. Bullying perfectly taps into this.
However, for any Bulls who don't have a personality like that, I think discipline works just as well. If you give cucky a list of rules and belt him when he disobeys, his wife will be your plaything.
If I'm able to be in a cuckold relationship I plan on gifting the Master a custom whip set.