It has taken me quite some time (and several attempts at collating everything into a research note) to perfect and learn all the eccentricities of this particular type of tail but I do feel confident in my recent experiments to post the videos below. While I focus on kite anemometers again, I do think this might be interesting to try on the mini-kite kit (https://store.publiclab.org/collections/mapping-kits/products/diy-mini-kite-kit). The patent of the weighted tail is here: __ TALA_kite_tail.pdf
There are several inconsistencies I found when trying out the real kite system based on this patent. Only one weight was used (at the bottom of the second tail section) and the streamers were only found on the bottom of both tail sections.
One more thing, in terms of tail length I found that anything shorter than 5-6 meters produced wild oscillations. Simply adding more line to make the tail 8-9 meters eliminated the oscillations. The weight required is something I'm still experimenting with. I have gotten favorable results with my 18 inch sled using only 2 6/32 nuts tied to the end of the tail. A formula is given in the patent.