If my QMX+ initiates (it hasn't yet!) I intend to try 6m QRP FT8.
UPDATE 0945z: Well, the QMX+ eventually did initiate. Probably this occurred in the first 20 minutes. The secret seems to be just to leave it. I would have expected this to happen within seconds. This is not fatal, but definitely needs fixing or explaining. Otherwise the QMX+ works really well. So far, spotted by 7 English stations on 6m QRP FT8 this morning.
UPDATE 1238z: 19 English stations spotted.
UPDATE 1545z: 30 stations have spotted me. Some are European. F2 backscatter?