Oh but I have ways to keep you hard enough to make the knob polishing most effective...so I'm not sure that would save you.  And there's always the vibrating wand, which doesn't exactly depend on a hard dick to be effective. ;-) Assuming those ways work on you, I wonder what you'd be offering me in order to get the knob polishing punishment to stop, or even a reduced sentence? An extra MONTH in chastity? Weekly ruined orgasms before being locked back up again? Or...?