User blog comment:Keekian/The topic of Haki./@comment-24850639-20171229162127/@comment-70.140.27.188-20171229175502

on the case of Ussop not needing haki for his projectiles, I'd like to up the women of the isle of women. Remeber that their arrows were coated with haki, even though they were projectiles. If it was possible for them, it could be possible for Ussop. I understand where you're comming from with Nami though; It's hard to see where either type of Haki would come in handy for her, but as you've said, Haki seems to be a necessesity. In Nami's case, maybe learning observation Haki would help her increase in speed. Who knows? The rule's don't seem completely developed or set in stone.