I prefer to use tulle from the volt versus yard and use at least 4-6 yards per tutu which I believe is the equivalent of the 100yd bolt. Mine are really fluffy as well (can't post pix from my phone
). I usually cut 20" from the bolt and then cut six inch increments from there to give me a length of 10" . I have found about 10" has the most poof. But I am still new and defer to the brilliance of the veterans here.