The essence of the solution is here:
The lower element puzzled me until I found this explanation in QEX March/April 2024.
Here's the fine article showing exactly how to do it and why it works so well: It looks like a development from the compact counterpoises of Les Moxon? -Maybe I misunderstood, so what do you think?
The original slideshow of the presentation is online by K2KW at:
https://drive.google.com/file/d/13_zfqs ... 3OTNt/view