That could be a commercial Leo, PRICELESS!
I camped this last year in Mercerberg PA and had afternoon thunderstorms 5 days in a row, each of those was a heavy enough rainfall to put a quart of water in a bath tub inner in 60 seconds. Ground splatter strong enough to soak you to your knees, so an umbrella user like me wouldnt even be able to hunker down under the 'brella for long. But using your technique, a much better outcome is available given a flat spot and a fly first tent.