'Spyromaster64's random Pokémon adventure in Sinnoh!'

Pokémon Emerald

Go to Mossdeep City, then keep on traveling (surfing) north for 5 seconds, turn left for 2 seconds, then keep on going up. You will reach the Shoal Cave. Here, on everyday, you will find exclusive items, like Shoal Salt and Shoal Shells! Get four of these, then talk to the man near the entrance on the inside of the Shoal Cave. He will make a Shell Bell for you! Each day, four more of each of these ingredients appear in the cave.

That's all for now, sorry I only had one cheat. I'll be back with more soon!

-MEANWHILE IN AN ALTERNATE DIMINSION WHERE LEGENDARIES ARE ALLOWED IN THE BATTLE TOWER FROM PKMN DIAMOND AND PEARL-

Me: Hi, you weird lady.
Lady: Hi! You battle yes? Okay I get reserve now.
Me: ...what?
Lady: Of course not! In that room with the archway! You heard them!
Me: Did I!
Lady: You never! (slaps me)
Me: Ow! What the hell was that for?!?
Lady: (sticks her middle finger up at me and disappears)
Me: ...okay... that was random...
Riley: (appears out of nowhere) Cool. Let you and I face the losers.
Me: Cool!
Mia: (starts crying) You never pick me! It's always him!
Me: Yeah, that's because you and the others have weak Pokémon, like Alakazam.
Mia: (shocked) Alakazam is not weak!
Me: Yeah he is!
Mia: Prove it!
Me: Well, Alakazam has really bad Defense... (lightly taps Alakazam)
Alakazam: (dies somehow)
Buck: Ya see now, Mia? We're pathetic! And so is Riley!
Me: No he isn't. He can boast a Regigigas, a Regirock and a Rypherior at the best of times.
Buck: Wow. What Pokémon do you have?
Me: Raquaza, Groudon and Kyogre.

Later...

Me: Go, Raquaza!
Riley: Go, Lucario!
Me: Raquaza, use Outrage!
(All oposing Pokémon die)

-MEANWHILE IN THIS DIMENSION-

Muhahahaha! Anyway...

Hints and tips time!

An exellent team for the Battle Tower in Diamond and Pearl is Garchomp, Rypherieor and Dragonite. I've tried this combo and got a winning streak of 126, and I'm still going!

Sure, that's great for the AI that isn't smart enough to put up a good team, but against other players, that isn't as good. Players tend to expect you to use a Garchomp, so they'll have an ice attack handy. All three of your Pokémon are vulnerable to ice attacks, with Garchomp and Dragonite going down with a single ice attack.

One of my favorite tactics is to have Regigigas (when I feel like using legendaries, which I usually don't) and either a Psychic Pokémon or Shuckle come out in a double battle. I'll have the Psychic Pokémon use Skill Swap/Gastro Acid (respectively) with Regigigas to take away Regigagas's Slow Start ability so it can start owning on the first turn.

Pokémon Diamond

If you like getting berries, go to these three places and look around, talking to everyone you see...

In all the houses in Pastoria City
The Berry Masters house (to the left of Hearthome City)
The flower shop in Floroma Town

All these places and areas have one person each who will give you a berry. The woman in Pastoria gives the rarest berries, and the one in Floroma gives the most common. The Berry Masters' berries are kind of in between in rarity.

Tips on making your Pokémon more friendly!

Feed them special berries that decrease a certain stat by a little, but make them friendlier.

Go to the two massage areas in Sinnoh - The house near the Gym in Veilstone City and the Ribbon Syndicate in the Resort Area. Give your Pokemon massages, and there you go! They'll come to like you more!

Try catching the Pokémon in a Luxury Ball. They'll love it. Trust me on that one, I caught my Pikachu (Male) and Pikette (A Female Pikachu who I nicknamed) in Luxury Balls, and they came to like me really fast. Try it out, it works!

Get 234 flags underground
Get At least 12 Pokemon at level 100
Catch all the Pokémon ever
Win all the Master Rank Pokémon Contests
Have at least 27 people in your Palpad

I did all of these on Diamond... WITHOUT A CHEAT SYSTEM. Yes, I play Diamond that much. Sue me.

An exellent team for the Battle Tower in Diamond and Pearl is Garchomp, Rypherieor and Dragonite. I've tried this combo and got a winning streak of 126, and I'm still going!

In Pokémon Emerald, after you beat the Elite Four, the TV will start flashing in your house. Your mom will ask if the Pokémon was red or blue.
Say blue if you want Latios and red if you want Latias. You'll soon see what I mean!

After the Elite Four, every 2 days (this has to be every 2 days, not 1 or 3 days, 2 or it won't work), go to the Mossdeep City Space Center. Talk to the scientist man looking out the window at the end of the first floor. He will say it was a successul launch and then he will say a number. Every 2 days when you talk to him this numbe will increase by 1. When it gets to 100, go to the back of the Center. You will see that you can now enter the giant rocket. When you go somewhere, go outside. Look around, and you will find Jarachi.