Professional water rocket guide

Step 4 Step 3: Nosecone

Glue or tape the nose cone to the top of the rocket.

Adding wieght to the nose cone may help, It will move the centre of gravity higher, thus being more stable.

Comments

[RGalliath]

Adding weight in the nose cone will shift the center of gravity up making more unstable and more likely to tip over in flight

[he who crashes often]

except that you are wrong. think of the difference between throwing a cottonball and throwing a marble the same size. there is the same air resistance on each, but the marble goes further because it has more inertia and is better at penetrating the air because it is heavier. now think of an arrow. there is weight on the tip, so that it flies straight because there is more drag and less weight at the back (feathers and no metal tip). there is a reason airplanes are more stable when nose-heavy than tail heavy. i think you are confused because the thrust is coming out the back and you think that weight in the nose will make it try to point lower and wobble around. but remember, the thrust will only spin the rocket around if it has a loose nozzle that will try to keep going the same way while the rocket spins. i see why you were confused though. your idea would work great in a vacuum with gravity but no air (like the moon) so there would be no drag, but not in atmospheric conditions.