Good boat name. I hope it has appropriate artwork to accompany the name.
Two other people, plus myself, built a pressure-propelled rocket in physics class during high school. We too the whistling things out of a Nerf football, and attached them. We all thought the whistles would be small plastic things. They were actually spherical objects, a little over an inch in diameter. The thing looked really obscene with them attached.
We wanted to call it "The Screaming Testicles." The teacher thought the name was great, given the *ahem* appearance of the rocket, and the fact that it did whistle when launched. But he suggested "Whistler's Mother" should anyone else ask.