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So Fauna did a run without the boulder, as a gag , after she successfully reached the top, people kept saying jokingly she's a WR holder, or at the very least top 10.
So I checked other boulderless% runs and they all used the "stuck" mechanic to skip the fences in their runs, which seems to be acceptable in the boulderless% category.
But Fauna did not use the stuck mechanic, she genuinely jumped over all the fences, and I have not yet seen anyone else doing it her way, and if that's true, right now, she is the WR holder for a new speedrun category, perhaps we can call it fence% because you mainly focus on the fences.
As for the actual timer, it's much less than the stream time, as it starts from when run begins and ends when you land on your feet after the final fence (to make the most accurate timer).