Sorry, I do not have any helpful advise... I just wanted to encorage you to pursue an efficient death penalty for your next venture... Like anyone sentenced to death would not be living for more that 7 day's and anyone sentenced to more than 20 year's would also be "put down" in a similar fasion. (hmmmm wounder what that would save us per year)
I would think that what you might consider is a limitation or ending of "good time" credit rather than parole itself. Parole in some states is actually an additional term of sentencing that a convict enters into upon completion of the incarceration phase of the sentence. Parole allows the authorities to keep track of persons who are released. For those bent on committing further crimes, the parole officer is often the one who first finds out that they are committing crimes. For instance, parole officers can often search the parolee and his home without a search warrant.
Good time credit is what often reduces sentences dramatically. Some states have day for day provisons that automatically cut sentences in half. The judge gives a defendant ten years and the good time credit cuts it in half. In my state, Illinois, we have a "truth in sentencing" statute that limits "good time" in violent and certain other crimes.