How to instal Aegir without root access

The Aegir documentation states that root access is required for installation, but I have seen comments suggesting it is possible to instal without root.
If this is correct can anyone point me in the right direction?

I host a few non profit sites with an Aegir service provider who has provided great service. But the sites have grown and the cost has become a challenge for them. I don’t have the skills for a self-managed server, so I am hoping to be able to find someone to instal on a fully managed server where someone else can maintain it and keep it secure etc.