Very entertaining and varied solutions.
I was mucking about with a piece of cloth instead of the second plate, and found four places where it
almost achieved the perfect "balance on top" needed. But that was only for 1968.
And, darnit, I was thinking today that maybe the first plate shouldn't be "full length", as proved the case in Alex's masterpiece.
But, my neighbour was moving house, and I ended up spending ten hours helping him, instead of trying out the idea. Sooooo close.....
Congrats to Alex for his inter-pixel tuning of the 1980 solution. At least he proved it could be done.
I also was amazed by Arunion's "plate on a rope" solution. I spent a long time hoping that one of my tweaks would have the incoming dillo balance on top of the first. And then it turns out, there were
so many ways to do it.
First impressions of this challenge being "too simple" were absolutely not true.