Start a corporation, put everything you own on the books then when you screw someone, deny all responsibility, claim personal bankruptcy to avoid financial doom and start again. It's what rich people have been since money was invented and there's some great tax breaks available to boot..
Disclaimer: I haven't completely researched this and don't really know what I'm talking about.
Even easier is to make sure that you and your family have no assets at all. Or any income for creditors etc to claim from. This works not only in protecting you from legal actions, but also absolves you of responsibility for many smaller bills. Worst case scenario is getting taken to small claims court and getting ordered to pay off debt at the rate of $5-10 / month for several years, but you can easily claim 'hardship' and get out of this too.
Many of Peths Eastern suburbs locals are experts in this strategy, displaying a remarkable knowledge of finer details of the law despite barely knowing how to read or write.