I have done towels in the past and had trouble with hoop marks on towels when finished and the nap coming through the embroidery after several washing even with heavy embroidery. Found using a water activated stabilizing in the hoop, activate just the edges and then do the basting stitch around the edges worked best for the back stabilizer. For the front place organza to match the towel over where you are going to monogram. That will keep the nap from coming through and is light weight and easy to cut away when finished