Quoted from northvibe:the lollipop ones from stern you can install aftermarket and not use screws on the flipper round section. I was going to do that as I don't want/like to screw into the decal/side. Like those skull ones...love that one but don't want to screw it into the cab :/
You don't have to screw it in if you don't want to. Just use a small piece of double sided stick tape at the bottom of the curve on the rail below the button. That will hold it securely while not damaging the decal if you wanted to change the rails down the road.