212 Hydraulics off....not a problem....hovering is bit of work but have done that.
Trick on the Cyclic is not try to "move" it like normal...but just apply pressure in the direction you wanted it to move and let the "motoring" move it for you....otherwise having a breakfast of Gorilla Grits was required.
Leading with Pedal movements during Collective adjustments made it easier to handle.
The Collective was no problem.
The S-58T with both Hydraulics out was more fun than the 212....I always got the impression I was carrying the Helicopter in my Left Hand when the Aux Hydraulics were "OFF".