Ohyeah ... best thing to do (I think) is pull on one side and check before going through it. You can always buy them and re-apply if needed.
As for getting them off I used an old shirt and my thumb. No blistering at all. I rubbed the tack from the back of the car towards the front (kinda just rolls). You'll have to see what works best for you though. Just keep trying different things
