The easiest way to do this is to backflip off the second-to-last chain on a flag line, then let go of the backflip to clip the very end of the line. The 250-point 'kiss the rail' bonus happens when you land on the last two meters of a grind and then hop off again it's also the subject of a few different goals.

I found a few different ways to finally achieve this goal: repeatedly jump with Maya to slow myself down before a field of rocks activate Felipe's double jump to jump early and use the second jump to stall over the rock and use the wingsuit to fly over a rock, then deactivate it to drop right on top of the rock.

In part, this is because rock bounces are tricky beasts: Most characters have high horizontal jump speed, so timing your jumps to land on a rock - especially a rock before a grind - is a difficult proposition. I spent an ungodly amount of time trying to master rock bounces after running up against the goal 'Rock bounce to grind twice in one run.' And, spoiler: Even with a lot of time and practice, this is a hard goal to achieve.

I also suggest practicing your flips with a Hover feather: If you see a blue feather in the course, you can pick it up and flip to your heart's content - if you land on your head, the hover timer will reorient you upwards and continue your route.

Alto's adventure 250 000 trick points