Saw the start of the episode where the friend asked for a bow two days before he wanted it, then I got busy with something and didn't see the rest. Glad I didn't. He could've cranked out a real selfbow in two days. I guess the idea of sinew backing was just too sexy for them to not include.
I think Marty has the most actual mountain skills even if he is using more modern equipment. That dude is living on the edge on a daily basis. Eustus is just a subsistence farmer and not a great one from what I can tell. He'd be more interesting if they'd show his still and his patch of weed.