@TheFlightGuySP Ill try that

@Hiimakeplanes You could try using several rockets. That's what I did before I discovered missile propulsion.

@TheFlightGuySP well rules say I can’t use a missile for now :/

@Hiimakeplanes You can use a separate missile as a rocket engine.
That's the method I'd recommend anyways. They're far more customizable, though they're also a bit more tricky to set up.

@TheFlightGuySP is there a way to make a rocket powered missile faster?

You don't.

You can check the SimpleCheats documentation for proof.