1) Get the county clerk's office to file a clearly manipulated trust document that isn't even notarized properly.
2) Get the local tax office to change the addresses on the property (without telling the owner, of course). [See sample document shown here; I have more.]
3) Get the county attorney, D.A., state attorney general, and DOJ to refuse to do anything to investigate or prosecute. [Don't believe me?--I'll be glad to show you their responses.]
4) Put the owner under intensive illegal surveillance so you know every attorney they try to contact; then either scare off or buy off all of these attorneys so the owner is unable to obtain proper legal representation.