How to lift drywall for ceiling up onto a scaffold?

Not all lifts are created equal!
If you get a nice one not a cheap one they work much better.
I know plenty of hangers that work alone with lifts.
Faster with two guys yes.
There is no way its easier on your body to header ( using your head ) or stiff arming above the head .
Most drywallers that hang for years end up with shoulder problems.