Not Quite the Dambusters

I and a colleague are hoping to put on a demo game a couple of times this year based on "Operation Chastise", the attacks on the German Ruhr Dams by 617 Squadron.

I've come up with the following draft of the rules which may be viewed here:

https://docs.google.com/file/d/0B8bTJzn9BJDfcTJlWGpiazZnNU0/edit?usp=sharing

I've not made it entirely clear in them, but it's a public participation game where three members of the public can fly one of three Lancaster models at a dam whilst under attack from German night-fighters.

You'll sit in a little cockpit arrangement where are recorded your dynamically-changing speed and height as the jerries knock the tripe out of your crate.

Any feedback would be most welcome.

Yes, I'll be using 1/72 Airfix kits.

No, we won't be using that codeword.