I understand that it would be a 'little' dangerous and probably a little difficult to fly a fighter at say, 20-25 feet (which is where I put this one in the film), but surely not too hard or dangerous.
My reason for thinking this way is simply the example of something seemingly far more difficult and dangerous having been done by a number of planes during the War.
Of course, I'm talking about the Dambusters. Lanacsters 60 feet off the WATER in the DARK, under fire, carrying a 3 ton bomb. Surely after this, in such an aircraft, 25 feet for a Spitfire is not that much of a feat.
I'll admit, I have no actual experience or knowledge regarding low flying but I'm applying a bit of common sense and come up with this idea. ;D
