All you have to do is go to Walmart and find the 3/4" trailer jack nut driver in the RV section, for about 5 bucks. Or go to Amazon. Then get a battery drill and you are done. Riobi from Home Depot makes very cheap and durable kits with the drill, the charger, a battery or two and a soft case. Then drop in a drill index and possibly a Riobi flashlight, and suddenly you can fix all kinds of things and run the jacks at night. BTW, if you use an impact driver, you'll likely twist off the crank pin, or shatter a gear. Just use the drill. There is no need to reinvent the wheel or manufacture anything.
I only exaggerate enough to compensate for being taken with a grain of salt.