Amazing technique.
When you think about it, there would have had to be a better way to take down a bison than having 25 hunters each firing one deliberate arrow at it, while the rest of the herd are stampeding in their general direction.
It puts a different spin on the longbow artillery at Agincourt, which must have been terrifying. Zen archery as a form of meditation, deliberate and calculated, also looks a little different.