I drank my Dr Pepper and lopped off the top of the bottle. I added an elastic cord to connect the nose, body and 'chute. After dry fitting it, I give it a 25% chance of success. I thing the nose will come off under boost. There is one sure way to find out :)
Here again is the rocket with my Quest fins and quick connect. One problem with these fins is that they are contoured to the larger body and don't move gracefully to smaller bottles.
Here is my ancient "Hydro 1L" with a new 'boink' nose cone. You can see the rubber stopper that came with my spare set of StratoFins. So, I have 3 rockets that each require their own GSE.