Barrett,
A little speculating.
Is there any chance of finding an 'anchor' point on your home's roof?
Nothing very spectacular or noticeable from the 'street' side, but one
that would add a few feet/yards to your present antenna supports?
How would your neighbors feel about a fairly tall pole supporting a
bird house? (And naturally, you would want to guy that pole to keep
the bird house from falling, right?) Several possibilities there!

The conductor used for an antenna must be conductive with a low
resistive value. After that, almost anything will work (just fine, in
most cases). Who wouldn't want gold/silver conductors if po$$ible,
but copper works well for us poorer people .

If whatever you end up with works, it not being one of the classical
'shapes' for an antenna isn't exactly a "biggy". Having lived in
places that were not the 'ideal' antenna sites for most of my life,
when confronted with a site that could hold almost any antenna, I was
really at a loss as to what to do. And since the antennas I have used
prior to that were never 'ideal', I ended up using one of those "less
than ideal" antennas and did just fine. Did I have the 'best' signal
on the band? Not exactly! But so what, it was "good enough". I
think you are in about the same situation, sort of. (I also do not
have a planning commission or deed restrictions to worry about, so
guess I'm 'ahead' of you in that regard.)
Good luck!
- 'Doc

(Pssst! Put that tuner on the roof, cover with something that looks
like a "sun roof" thingy, support the antenna wire with a post with a
weather vane on the top. If questioned, say the @#$ thing has been
there for ages, those @#$ - ^%%^ neighbors don't know what they are
talking about!)