I use this for our library paperbacks. I am just finishing up a 10" x 600" roll we purchased last year. After we have otherwise processed the book with all the correct labels, I carefully wipe down the entire book with a dry cloth to remove all fingerprints, then I use the technique found at: https://youtu.be/pYOVVuO3vRs I use a boning tool as I go to very firmly press out all bubbles on each side as I go. Around the spine I press firmly and stretch with fingers so I don't get any little air space. The boning tool especially helps stretch and adhere the product if there is any embossing on the cover.