...probably it's not a big surprise, but I've just tried to upload v3.8 surf scheme that doesn't require 'TestStuff', adjusted with 60 seconds turn-time (surf+fly+w2w), but the same scheme may be used for surf only (turn = 30 sec), or surf+fly (turn = 45 sec) - now, is there something wrong with the scheme file itself or the board's engine just isn't ready for this yet?
(new thing is that we can now use the 'Space' to fire the rope during surfing)