Help with Hood Scoop Install

I know.....this is gonna sound redneck. But I have tried every way possible with those. The best way I found is to use double sided tape on the edges between the scoop and the hood to seal it, position it where you want it and pop rivet that bad boy on using rivets with LARGE diameter washers on them. I've used every kinda bonding method and it always cracks over time. Once painted, you will hardly notice the rivets.