The Muse, and Clutch songs are great ideas.
Rogers Arena has the best built in system I've ever heard. You have to get something that takes advantage of that ability to provide concert level bass for the goals.
Also can you change the horn? Is it a real horn or just a sound clip? If its just a clip, can you get something a little more ship like and less train? Isn't BC Ferries a sponsor? Maybe get them to record a clip for you. Just keeping with the no cotton eyed joe thing... A ships horn would feel more unique/coastal.
The air raid part is classic though....