Good to know.
The question is WOULD you have were you running an underground railroad station in 1860?
That was not the question.
. . . the only question left is should those running the underground railroad have only "given them food and turned them in"?
But, I'll answer the revised question like this:
When I was young and rode broom stick ponies, my cousins and I loved to re-fight the Civil War. We were extraordinarily daring and dashing Mosby Raiders. Those damn Yankees never once did us in.
After a particularly bold hit and run attack against the blue bellies, resting up back in camp, I asked my favorite Uncle a similar question. If we were still fighting the Civil War, which side would he be on, North or South?
He cocked his head to one side, gave me one of his thoughtfully bemused looks, and said, "Well Race, if I knew then what I know now, I'd have to fight for the North."
Took me awhile to learn what he knew.
So, what equivalencies are you trying to make?
It's only an analogy - so, I can't wait for the answer: knowing everything you know now, would you have turned in runaway slaves? You already answered that you would have prosecuted those who didn't.