I'm going for 100% with walkthrough, and since I watch the video walkthrough while I am playing it, (of course, paused), I have 10+ hours in the middle of the second dungeon.
Yeah, use the walkthrough.
1. Roll over Ocarina of Time at the top of this page.
2. Roll over over Walkthrough for the text walkthrough and Video Walkthrough for the video walkthrough. I prefer the video walkthrough.
3. Click Water Temple.
4. Play through the videos and play the game.