Just a comment from a relatively dis-interested observer across the pond;
Been to many airshows, love them, but it is time that minimum altitude for all maneuvers be moved to 300' or above. If you're not at the front of the crowd, you can't see that inverted pass down the runway at 20' for all the heads and bodies in the way. Your kids can't see a darn thing below 200' for the same reason. My interest is in seeing a plane and pilot's skill, not his bravery.
I was at an airshow at Navy Dallas decades ago, when Bob Hoover did a routine in a borrowed Mustang. Nice, relaxed routine at around 300' or so, 16 pt rolls and the like, very precise. Most of the crowd yawned and went for refreshments. The un-educated are there for smoke and noise, and some are entertained by the idea somebody might go "splat". That's a shame.