Scoutfly Boosted
A Scoutfly boosted is a direction shift boosted performed on a Scoutfly crate. It is currently only utilized during Lava Tube Skip to reach the final cold spot.
Variants
Normal Scoutfly Boosted
A scoutfly boosted is simply a direction shift boosted that is performed on a scoutfly box. The normal variant of the trick does this with no interruptions.
Zoom Scoutfly Boosted
The zoom variant of the scoutfly boosted involves interrupting the process of the direction shift boosted with the Triangle button to zoom into first person view. Many speedrunners prefer this method because of its higher success rate.
Tutorial
Technical
Discovery
Grig was the first person to discover and perform a Scoutfly Boosted. His method was to frame buffer with pausing until the Scoutfly crate did its hop animation. Once it hopped, Grig would get a boosted from the front of the crate.
On January 21, 2016, while Kuitar was routing the first version of Lava Tube Skip, Ouiji_Shi mentioned that it is possible to do a boosted off of a Scoutfly crate.
Other Notes