Thanks. I've rooted the device now. I'll say it certainly isn't a one-click method, and despite WUG being the simplest, it wasn't a completely simple process IMO, esp. since the instructions are all over the place. I can't imagine the average non-geek doing this at all.
For the uninitiated, the process went something like this:
1. Turn developer options on.
2. Activate USB debugging mode.
3. Attach device to Windows machine (Win XP in my case).
4. Install drivers.
5. Ignore additional repeated requests by WinXP to install drivers.
6. Install PdaNET software. Ignore options for phone tethering and SMS viewing.
7. Run Nexus Root Toolkit
8. Unlock device.
9. Accept option on screen.
10. Turn developer options on again. (I think it was here I did this, but I can't remember.)
11. Activate USB debugging again.
12. Root device.
13. Activate SuperSU
14. Install BusyBox Free. (Ignore all the various options, because there are a bazillion of them.)
---
Thanks for the help though guys. I'm anxious to try Stickmount with some video files on an NTFS USB drive when I get home.
Maybe I'll also try to sideload Flash 11.1 onto the machine, unless you tell me that's a bad idea.