Hydro Thunder
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Turbo StartSent in by Tips, Codes, Hints, Cheats, and Secrets HunterTo do this trick in Hydro Thunder that will move you up a couple of places in the beginning, simply wait until the announcer gets to zero on the countdown before the race. Then, right before he says zero, press A (go) and you should boost up to 13th. This trick is hard to master, so you might have to try a little before you get it down.
Hydro JumpSent in by Tips, Codes, Hints, Cheats, and Secrets HunterAt any time in any race, you can perform the Hydro Jump, which is when your boat launches it's self into the air, as long as you have about five seconds of boost power. To perform this jump, simply press and hold the brake button, then activate your boost. With these tricks, you can find hidden boosts and reach hidden shortcuts. Remember though, that the Turbo Jump will reduce your speed by a little bit, so don't use this jump on strait-aways unless your getting a boost or taking a shortcut.
Blue boostSent in by Tips, Codes, Hints, Cheats, and Secrets HunterThis trick works kind of like the Turbo Start except that this one gives you the4 second boost in the beginning needed to get some shortcuts and boosts by hydrojumping. To do this, at the countdown, press B on 3, A on 2, B on 1, and A on Goand you will hydro jump in the air and get a blue boost. 
Unlock Levels and BoatsSent in by Tips, Codes, Hints, Cheats, and Secrets HunterEasy Boats & Levels - You start the game with the easy boats & levels.Medium Boats & Levels - Beat the easy levels by placing at least third in each race.Hard Boats & Levels - Beat the medium levels by placing at least second ineach race.
Bonus LevelsSent in by Tips, Codes, Hints, Cheats, and Secrets HunterCatacombs: Beat the hard levels by placing first in each race.Hydro Speedway: Place first in Catacombs.Castle Von Dandy: Place first in Hydro Speedway.Nile Adventure: Place first in Castle Von Dandy. 
Bonus BoatsSent in by Tips, Codes, Hints, Cheats, and Secrets HunterTiny Titanic: Place first in Catacombs.Armed Response: Place first in Hydro Speedway.Blowfish: Place first in Castle Von Dandy.Chumdinger: Place first in Nile Adventure. 
ShortcutsSent in by Tips, Codes, Hints, Cheats, and Secrets HunterVenice Canals - Towards the beginning of the level, after the second checkpoint, there is a wall with a red arrow pointing left. Usually you would turn a sharp left, then a sharp right (a full 180 degrees)slowing you down and causing you to bump into the walls. But instead of turning that sharp left, just "Hydro Jump" (above) over the wall. It will cut about 6 or 7 seconds off of your time and you will end up in like 4th or 5th place. Venice Canals #2 - Towards the beginning of it there is a wall that has poles coming out of the water and there is a board going across the top of it do a hydro jump of that wall and it cuts off a lot of time.Far East - After the Blue Boost that's hanging out in the air, you'll hit a bunch of small waterfalls followed by a Tunnel. If you jump on top of the Tunnel, you'll cut you're time in half for that section.

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