I use the hand crank referenced for boat cover repairs in situ. I concede the 1:1 would get tiresome for what most machines are used for. 1:1 with a largest hand wheel or extension to max diameter permitted would give enough torque for minor use. My rotator cuff would suffer, however.
Edit: I see Miriam has answered the 1:1 concern more succinctly than I in post #12.