Here are the secrets so far.
1. Mermaid's Cave
Requirements- Have your own boat.
- 6 PowerBerries
- 3 mermaid letters (Optional)- Appears on the town beach
every week.
Go on your boat, by navigation.
To do that, select no first, then yes, when you want to ride on the
boat.
Now go down a screen. Left 2 screens. Up 3 screens. Finally, a
screen to the right. There should be a cave. Direct your boat into
the cave. Go up the stairs once you get off the boat. Press A to meet
the mermaid. If you have 3 mermaid letters you will get a powerberry.
2. Fishing for 5000 Gold
At Spring first, second year, talk to the aquarium guy, and
3. Snowboarding Powerberry
Get 100 pts and under 146 secs. To get a powerberry hint. You must get
that score and time, or you cannot get that powerberry.
4. Free 1000 Gold
Go to the fireplace and press (A) and you'll get 1000 gold.