SWEET! Which projector do you have? I'll be at the game, otherwise I'd have loved to have been there.
It's a BenQ. That was the hardest part. Finding a projector that could throw a long distance that didn't cost a fortune is a bit tricky. None of the consumer level products market themselves toward outdoor theaters (so you have to do quite a bit of a deep dive into the specs to figure out which models will work) but I bet they will soon. Now that projectors in general have plummeted in price, doing this is not that difficult/expensive.
The funny thing is, 20'x10' is already absurd, but you know I've been figuring out how I could make the frame even bigger...
And, yes, Halo on it is awesome.