I was looking on the Internet to see what accessories I could buy to improve the exterior look of my a3 s line and I came across shark fin antenna with no function just for decorative purpose only which simply attaches using 3m adhesive. I guess to fit this would mean peeling of a backing paper to reveal the sticky adhesive and place on the car. Is this a good idea in terms of maybe damaging bodywork if this comes off. Has anyone experienced using one of these?