Thanks for the interest.
BossCat - yea, I did a bit of manual re-proportioning of the forks I'll use to connect the trailer to the bike. They fit just about right, now.
I like your hitch a lot, it looks better than simply a set of front forks sticking out from the trailer. I do have some spare handlebars/stem that I suppose I could employ. Hmm. It does mean more welding, though, and I'm really not very good at it. I'll see how it looks when it's coming together.

Yesterday I retrieved two more baskets, a very heavy-duty panier rack, and an entire frame of one of those post bikes (including a very useful lock... the kind that is fixed onto the back of the frame and inserts a bar through the rear wheel).

I'm heading out to do some hacking and whacking now.