Adjust C-Clamps in Seconds

[Toolmaker51]

Normally, I work alone. Sorry, needing two hands [hold clamp and drill motor] isn't my idea of effective. One is usually already occupied, keeping something in place. Agreed "F" clamps are quickest, but the extended arm often a limitation.

C-clamps are still king.
It's best to preset clamps, but not always possible. Your driver IS beneficial there.

Here is my approach. a] I keep them clean and silicone dry-lubed.....most are old with aggressive thread pitches that move quickly. They also advance more smoothly than the now more common V-profile with all-thread grade finish.

I've watched [impatiently] while other folks patiently twist C-clamp by half turns, usually while I'm holding up a heavy so and so. On the next part we trade.
a] I start off just as they were; Ooooooh the look you'll get, as it sinks in.

Then I shift to b] grasping the screw and cross handle in one hand; spinning the clamp as would cowboy twirling a rope. Finalizing the opening might take a spin or two CW or CCW, enough to hold position while drawing up pressure. Their expression changes.

Now, it's not so easy with structural clamps; little ones are 7 or 8 pounds and a little square head. I just might cannibalize a socket and your tip for those!