Depending on what kind of pressures you can press on the weak points:
1) if a person has property, use prohibitory order (freezing order).
2) if the person has a job, use bankruptcy, and creating bad credit.
3) if the person has no money and already has bad credit, then no much choice, can use court (collection unit) which is slow, and might end up paying you $20 a week or less.
4) If the person has the potential to pay you back and will be buying a property in the future, negotiate for a payment scheme.
No.5, reflecting on yourself, why would you have done business or lend money (rent your property) to that person and end up incurring bad debt.