VHF scatter?

2m FT8 continues to amaze me.

Every single day I get spotted at great distance. Ranges are typically more than twice the range I can manage on CW or SSB.

At first I thought this was a mix of "flat band tropo" and aircraft reflections. As this sort of range seems to be possible at any time, I do not think aircraft reflection is likely. Another possibility is random MS. At the moment I am more inclined to think of this being some sort of scatter. Polarisation seems not to matter.

See https://sites.google.com/site/g3xbmqrp3/vuhf/2m-ft8