A winter storm brought down my ancient 137 foot 80 – 10 meter doublet in an inverted Vee configuration, with the apex at about 55 feet and the ends at about 20 feet.
I’ve replaced it with a 140 foot triangular-shaped “loop” antenna that faces Europe.  The apex is at about 50 feet and the bottom horizontal wire is at about 12 feet.
It’s fed at a bottom corner by a length of #14  450 ohm  Ladder Line connected to a 1:1 Jerry Sevick design (picture H) current (a.k.a. “Guanella”) balun at the antenna patch panel in the shack.
#14 450 ohm ladder line is actually about 370 ohms, according to the manufacturer.   A 3 foot coax connects from the patch panel to my homebrew T-match tuner.
I haven’t used it enough to figure out all its lobes but I’m sure it has several.

For receiving (only), on noisy bands like 40 meters, I use an approximately 400 foot “irregular loop” antenna laid right on the ground; mostly covered by leaves (it’s a 1.15 acre wooded lot).   This is also fed by 450 ohm #14 twinlead (~370 ohms).  My Drake 2A receiver, in particular, likes this antenna which drops the noise level greatly and makes the signals pop up easily.

I have a project to refurbish an old 20 – 10 meter trap vertical and mount it with the base above 10 feet high, with four elevated radials.  I don’t know when I’ll get to this project.

I have two homebrew tuners:  One is a classic “T-Match” with a rotary coil and counter.  It is connected to the Yaesu transceiver.  The second one is a C-L or L-C that is used by the 6L6 or DX-60 transmitters and uses a switch-tapped coil.  Both produce a 1:1 match to the triangular loop antenna on the various bands.
Switched inputs for multiple antennas, transmitters, receivers, ground and a dummy load are included in the T-match.  A 1:1 T-200 current balun is built into the front end of both tuners for use with ladder line antennas that might bypass the patch panel.

A field strength meter indicates that power is being radiated and not consumed in the tuner.  A 500 watt dummy load can also be connected.

A remote-reading infrared thermometer indicates no heating of tuner components which is another good sign that the RF is making it to the antenna and not warming the shack by heating the tuner.

Vertical Antenna.  I recently installed a vertical doublet, that has 20 feet on each side.   L.B. Cebik, W4RNL (SK) has analyzed such an antenna and seems to like it.  It was fed with 450 ohm ladder line (~370 ohms) that terminates into a 1:1 T200-2 Guanella balun, at the tuner or at the patch panel.  The bottom end is about 10 feet above ground.  I’ve removed this antenna as its receiving capability was not even close to either an old inverted Vee or the present triangular “loop” antenna.  I guess more total wire is better than a shortie.