Other bands with the earth-electrode "antenna" in the ground

Just for fun yesterday, I tried (not very hard) to use my earth-electrode "antenna" on 40m and 30m FT8. Using the auto-ATU in the FT991A I tried to get a good match. On both 40m and 30m the SWR was too high, so it failed to even try! On 40m FT8 RX it was still seeing plenty of spots even so.

At some point I must try the unun in my x80 to load up the coax to my big-wheel antenna. With the auto ATU in the FT991A it may match on some bands.