The pooled trust is an alternative to the Special Needs Trust. The former is usually managed by non-profit organizations that combine resources of several to many families. Each beneficiary would have their own personal bank account with the organization acting as the trustee of the trust.
It is not necessary to hire a lawyer to create a Special Needs Trust. But in most cases, it can be highly recommended. You may enlist the help of a proper attorney to create a bulletproof trust.
Anyone really, with the notable exception of the beneficiary of the trust. In most cases, these trusts are created by parents for their disabled children. But other family members can add to the trust as well.
Yes, a Special Needs Trust can be terminated at any time. It usually happens when the funds are completely depleted. Or when the beneficiary does not require government benefits anymore. It is also terminated automatically if the beneficiary becomes deceased.
To be effective, the Special Needs Trust must be irrevocable. After it is signed and notarized, it can only have small amendments under special circumstances, For any significant changes, you will have to create a new trust.