http://www.cleverscampcamp.com/metal-camping-water-bottles/
How to make fast bottle rocket with 60psi and 12 ounces of water?
I need help on how to make the rocket stay long in the air. Like what stuff I should add, what type of fins and nose. No metal is allowed( this is for a camp).
knock your self out 
select water on the simulator
40 FMJ Bottle shoot