Place Quick Fit on each side of the back seam if your problem is a bulge in the back. Place Quick Fit on each of the side seams for any other issues. Be sure and lift the belt loops up so the heat can go through the fabric and the adhesive can seal. Let cool for 45-60 seconds to allow adhesive to seal. If any corner of the Quick Fit comes up after several washing then just press and steam it back down.