1 strategy is to pull the debtor into court repeatedly and hope they fail to show up once so they can be jailed for failing to appear.

Repeatedly missing work can also put the poor person in danger of losing their job as well.

Fake threats of jail or other impossible consequences aren't unheard of either.

Just one example: look at states which charge overly-prosectured minorities parole fees (often for unpaid tickets and other civil matters) and reimprison them if they are unable to pay these extortionist taxes.

It's the one thing you need to show up for. The judge usually just fines you, but can arrest, at least in CA. I had to show up for one, and my judgment holder didn't show up, and the judge fined him $200.00, even though I told the judge I didn't lose money by comming to court.

If you ever find yourself in this stressful situation, you have a lot of rights.