I've read a few threads about modifications to use an electric drill on a manual jack. I've got a small machine shop in my garage where I have a paying hobby of making small custom Harley parts. I'm thinking our new a-frame will give me another avenue to explore.
This is what I came up with for the drill adapter for the front jack. It's easily changed out to the handle if needed (no idea as I haven't tried it yet) if necessary using the pto pin to remove and replace either as necessary. I plan to leave them both off and in my tool bag until needed. I made the hex 3/4" as it's the same size as my lug nuts and my leveling jacks.
I REALLY wasn't trying to make it pretty (it's not going on a Harley), but strictly for function. So there are still machining marks on it.... I've still got a bit more cleaning up to do....