My buddy Mike used a stack of old car magazines for two years before he found the screw.

Yeah I used to think 2FA was overkill too, but your story totally flipped my mind on it!

Buddy of mine did the same thing with his patio in San Antonio and ended up with a white crust so thick he had to power wash it twice. He said the extra cure strength wasn't worth the headache of scrubbing that stuff off.