Tank you for your input. Yes, I have considered making it a little bit easier to find out where you're supposed to go. Like when you meet the Deku guards, they should tell you that you have to speak to the Deku King.
The item you need is the boomerang. You can buy a wooden boomerang in Hyrule...
Due to recent takedown actions at Game Jolt, I decided to share my fan game here. The game is still in development, but the demo is part of the full game. Let me know what you guys think.
THE PROJECT HAS BEEN MOVED HERE:
http://zfgc.com/forum/index.php?topic=41680.0