For emergency use, why not find a pair of 1/2" aluminum pipe flanges, screw them down to the deck, with adequate backing, of course. Then, procure two pieces of aluminum pipe of appropriate height, as part stanchions. Electrical conduit will work, threaded on one end to screw into the flange, and then find and install into the other, (top, or upper end), nylon bushings, made for oarlocks. When not in use, these can then be stored easy to reach, yet out of way inside the boat somewhere. When needed, the pipes are simply screwed into the flanges, and voila. Very quick, cheap and effective.
I have these on a little, 8' aluminum Duckwater marsh boat we won at a duck hunting show a few years ago. In my case, I can remove them while hunting, as they stick up and sometimes get in the way.
From my experience, I'm not sure I would want to rely on them for rowing miles and miles on an everyday basis, but for light, or emergencies, I think they would be just fine.
Just an idea...
PS, I would get photos, but right now, that rig is tarped over and buried under snow, with a major storm predicted to hit at any moment...
Jon