I rough up the inside edge with some sandpaper. paint the outside edge to match covering (ultra paint for ultra cote) Then i glue it on with RC 56. I usually go to a sign shop that specializes in vinyl lettering and get some scrap the same color. I cut it 3/8"wide and seal the outside of the canopy to the fuse. I also take a pin, heat it up and poke a hole at the back of the canopy on the edge somewhere. this releaves any heat build up and stops the canopy from fogging up.
Works great and i have never had one blow off or crack from vibration.