Ultracote stretches very nicely using Minn's suggestions. I use a small trim iron on hi heat - holding it within 1/16" of the surface. This heat is up into the stretch / shrink temp range of the film. I don't need a glove as I would if I used a heat gun so I can be fairly accurate with my "tugs". With Ultracote you should be able to stretch the film 1/4" onto the back side without splitting the film. Totally unfamiliar with Monokote and its characteristics.