I've seen it done one about 25 years ago. It didn't turn out well. Granted, the rest of the show wasn't great either, but standing still didn't help. Early in my career, I had to throw the closer on at the last minutes. For us, we just kept getting rained out. We literally taught and cleaned the closer the week of UIL. We just ran through the rest of the show, but taught and cleaned the closer as we went along. Straight 1's at UIL, but I swore to never be in that predicament again. I've spoken to a few directors who are rethinking how complex their shows might be going forward due to the lost outdoor time because of the WBGT. You still have a week, work the closer like your life depends on it.