Great advice, thank you!
I've been thinking on having someone drive them to me if I can get permission from the landowners nearby.
These deer are, I think, pretty obstinate about staying nearby. I think they're reasonably unafraid of humans. They've seen me in stand, tried to figure out what I was, and rolled off pretty nonchalantly. I don't wear camo or scent, so I am sure they had a good idea that I was not a tree.
Maybe I'll see if I can't drive 'em out of there some.