Thanks, mine is screwed on lol. Go figure.Samy it staples on. I had mind ripped off 3 weeks after I bought the car. I finished the job by taking it off the car and never put it back on and I've never noticed any issues with overheating or problems with it not being on I do however have a spare in the basement to put on any event that I ever saw the vehicle. Otherwise I wouldn't worry about it.
Mine has never been ripped off so I'm not worried about the screw holes. The wear came from the EPDM flexing at the 90 and the strip breaking in two. You would have to grab it with something to tear it off the car.I parked up in a supermarket and my front nose went over the stop kerb slightly, it cleared but the airdam snagged and got ripped partially off, the noise was horrendous and I jumped out expecting to see a crumpled nose, lol.
Anyway, if you use screws and it gets ripped off again you will end up with large holes in the smc panel. Staples will pull out much cleaner with no damage, but I just used some double sided foam tape (quickjack job) its holding well.