You could, but I generally prefer to use a circle cutter (OLFA and Hobbico each make one... I believe I own both...) and cut 2x 1.5" to 2" holes in the rear to allow air out. Should do a decent job of preventing kiting and since it's two holes with material around them, it should be a little stronger. They used to do this all the time on 200mm TCs because the holes in the back did more to remove heat as well.