I'm pretty sure that Jason Jones kid that was on world did a back board down in a Digital or Logic video.
It's actually the ender in this one step beyond montage, and it's crazy.
on a rail or hubba:
switch front shuv bs 50-50 (maybe abd)
fakie flip bs 50-50 (same)
fakie front shuv switch bs 50-50
Fakie tre flip into that bank appleyard and I think massimo fakie flipped into. Might be scariest trick I can think of down it. I find them easy enough on flat, but super hard to control otherwise. I don't get how people can fakie tre flip big gaps.
And this one's probably inevitable: kickflip straight over the top of a rail to 50-50 (as in the way AVE ollied over to 50-50 in photosynthesis and people have now begun doing ollie over to nosegrinds, 5-0s, switch 50-50s...)