Having said that, is there any simpler structure to protect from losing everything?
Its not so much the structure but how you set it up and how you use it.
Discretionary trusts and superannuation are the two best structures for asset protection.
Discretionary trusts are good because no one has any entitlement to the income or capital of the trust (until the trustee makes a resolution at least). This means being a beneficiary of the trust doesn't amount to being property as defined under the Bankruptcy Act.
When a person goes bankrupt then their property is taken over by the trustee in bankruptcy and this property is then sold and money distributed to creditors. Assets in the discretionary trust will generally not be available to the trustee in bankruptcy because the trustee of the trust will not make any distributions to the bankrupt person. If he did then the money would fall into the hands of creditors.
But where people can get into trouble is if they lend money to the trust, maybe for deposit to buy a house. A loan is always returnable so this could be returned to benefit the creditors.
Another problem may be where the person gifts money to the trust, maybe for the deposit. This could be clawed back to the person under the Bankruptcy Act for a number of years, depending on intention. If someone thinking he might go bankrupt gifts all his money to a trust with the aim of keeping the money from creditors, then this could be clawed back indefinitely.
Another potential problem is acting as trustee or director of trustee for no remuneration and then going bankrupt. This is like working for free and it could be claimed that the trust owes the individual wages or money for work performed.
Another problem may arise with uncommercial transactions. Having you trust put a mortgage over you home for eg. What is the commercial reason for this? A mortgage usually secures a loan. What was loaned to whom, and what for, what rate etc.
There are also the Alter Ego arguments. Since Richstar case some people have argued that where one person controls a trust then it is good as certain that they can make a distribution to benefit themselves. So they argue that the trust assets are the assets of the person. I don't know any cases where this argument has succeeded, but I know of one where it was rejected (Smith, NSWSC). To strengthen a trust it may be wise to think carefully about who the appointors will be.
Many things to consider.