Yeah, I got through it alright til I hit Xa Zuri (guessing from the katakana that that's how you'd romanize it). Lowering the water levels in every room is optional, but there is some treasure hiding on the ground floor that you might otherwise miss. I have no idea how worth it is since all the materials kind of blend together and I'm not really paying attention to them, buuuut...
Alright, I've found
got the Hook, and used it on the first spot to get
.
Now I
know I saw other Hook points elsewhere, but I have no idea where... uggggh I hate looking for this stuff.
e: Oh, it wound up just hiding a recipe for some kind deal, where I think you trade 10 of some material to get 5 of the four basic weapon crafting materials. Nifty, but I don't have any of the required material so whatevs.
e2: Oh hey, if you come in to Hakugyokuro from the Sunflower Fields, you can find
past a Hookshot point.