I went to the airport 3 hours early with no identification and told them the situation. They still printed my boarding pass and put SSSS on it. I went to the huge long line and I went around it entirely and went into the secondary screening room. They did a full patdown and entirely emptied my carry-on. It was no big deal and was done in 20 minutes, less time than I'd have stood in line. After that I boarded the plane and went home.
I've sometimes contemplated putting SSSS on my boarding pass with a red sharpie when there is a very long line just to get around it entirely.