Moving eyepoint

Hi,I am modelling a hovercraft, most of the model and flight dynamics are complete, but I would like to simulate the skirt of the hovercraft inflating, and raising the hovercraft.What I had in mind was using the spoiler animation to move the whole hovercraft, this would give the added effect of the body sitting on its hull when the skirt was deflated.One problem with doing things this way is that the virtual cockpit eyepoint will not move with the rest of the craft.Can anybody see a work around for this?Is it possible to read the distance from the eyepoint to the datum position and move the eyepoint dynamically?Thanks for any suggestions, David.