@Awsomur Good luck!

Not done yet.
@F104Deathtrap

@Awsomur Thats awesome, you got a link for it?

Nope.
@F104Deathtrap

@Awsomur No problems with it trying to nose down on you?

Made the wings larger in proportion to the plane.
@F104Deathtrap

@Awsomur Cool. How'd you do it?

Hold up: I just got it to work!
@F104Deathtrap

Nope.
@F104Deathtrap

@Awsomur Any progress?

The same @Awsomur

Thanks!
@ThePrototype

Make sure COT is lined up with COM

Like this

Turn the float buoyancy up to like 1000000

Thanks!
@F104Deathtrap

Maybe put more weight on the back

Unless it is a big big plane but still put floats on the bottom @Caveman999

I know put floats on the bottom

OK, so the short fix is use a gyro. The gyro will probably interfere with pitch, though.

The long answer is that the reason your plane wants to nose-down is because the engines are too high. Seaplanes have to mount the engines up high, resulting in a center of thrust that pulls the nose downward (just like having an engine on only one wing would pull the plane in circles). The real-life solution for this problem is a big, strong tail that can pull the nose back up again. Check it out: Catalina, Hercules, Sunderland; they've all got HUGE elevators. Pulling up all the time is a pain, so another thing that can help is if you angle the horizontal tail downwards 1 or 2 degrees so that it constantly pulls the nose (or attach it to a VTOL rotor so you can adjust it as needed).

Um...
sorry can't do nothing for ya XD

Thanks mates,
@Aarons123 @WaffleCakes

Ok.
@EpicPigsterGhost

Use a powerful gyro to stop the nose dives and make sure your plane has good pitch to pull out of the water

Try taking apart the one Jundroo made for you. See some things you didn't. Bah nana