I tried to post a picture of the NDS of the Electra. It went somewhere, but not here. I suspect it has joined the Mars Rover and will never be seen again. But after the advice above, I ordered a Burley Tail Wagon. They are out of stock at Burley but apparently REI can to an inter-store transfer and get one here in a week or so. There is a video showing it being attached to a similar NDS set up, so I think it will work. I hedged my bets and ordered another hitch to put on my bike if I end up being the cart horse.

Thanks to all, and sorry about not being able to post a picture. But it all worked out.

Mike