I have a restaurant with heart pine wood floors that were stained with Watco Danish Oil. We wanted a very natural rustic look. I don't want to use a poly sealer. Any other sealing possibilities? It is high traffic so I don't want to use anything with a shine (wax). I want to keep it having a flat finish.

Thanks!

Just buff in a fresh coat of neutral coloured oil as needed, more often in high traffic areas, less often in areas that are seen but not generally walked on.