It is now 0840z. For about 20 minutes, I have been on 8m FT8 QRP TX (first) on 40.680 MHz USB dial. No spots on RX or TX so far.
UPDATE 1103z: "p***ing in the wind" was the phrase my dad would have used in his colourful language! I have been on 8m TX for over two hours and I have not been spotted once. On RX, not a soul has been spotted. I am on FT8. I have never been closer to stopping my experiment.