I don't believe there is any interest in extending the PI rules beyond the max of 15 yards. I agree that's the best approach for NCAA.
It was something they wanted us to call a few years ago, but they want us to allow spontaneous celebrations that are quick and aren't targeted at an opponent (and don't involve simulating a weapon as we all remember). The quick first down signal is OK, but I still tell players to stop and get back to their huddle. Have fun but don't get over excited for a standard play.
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