FT8 is not much used on 70cm. It is pity much more use is not made of this mode on this band. If it was widely used, I am sure many short tropo openings would be found. 70cm is probably better than 2m for aircraft scatter and tropo often occurs on 70cm when it does not on 2m.
There have been FT8 contests and I can often spot stations in the Netherlands which would be impossible on other modes.