I know, It Is not a Fireboat but you will have a great time at Hovershow 2011. Of course there will be lots of big hovercraft and model ones too courtesy of the Model Hovercraft Association. You can learn a lot from these guys. I can recommend a visit. The museum Is In Lee-on-the-Solent. Check for more Info on the Hovercraft Museum website.
www.hovercraft-museum.org/hovershow201180.html