If i remember rightly when you did your coils they were like traps with wire wound closely together on where mine are spaced apart to avoid the inductance effect.
Now me 1/2w 40m inverted L might be of use to you built in same way as the with losing the 3m or wire in same way and then 11m comes off the top of the pole and down wards towards another support keeping end about 3m off the ground. And will tune to 80m as 1/4wave. As I know this one cracks out well as when last used at Rame head at reduced height cause of winds even on 40m worked parts of Europe and UK and Sweden. and on 20m was all over Europe and one station in states side. By doing the coiled part of the antenna and keeping it fully vertical means no wires dangling down like you said sometimes not the room to have that bit of extra wire coming down as an inverted L. Hence i have the 1/4w version of the 40m.
But some interesting ideas being thrown around and interesting to see the different ways peoples have. Do like me home brewing and making them work and improving on what you have and certainly replacing the one CP wire by chopping it into four but same length as the first one when adding the four together does make a difference as found out down Rame head in SX44. Man had some cracking signals coming even Sweden was banging in a good one on 40m.
But one day do want to try what i said and make a vertical 80mb 1/4w antenna portable of course and yet only need one pole just interchange the antennas depending on surroundings of the time.
Karl