Ya I lead some taraweehs at my masjid. The days that I lead I would do 4 rakats so just about 1/4 juz. I lead about 7-8 times last ramadan. But its not out of necessity that I got to lead because the sheikh of the Masjid is full hafiz and he used to lead all 20 rakats a few years ago. The sheikh just wanted students to lead so they could practice.