I've completely eliminated the Tattaglia family and the Stracci family. I'm currently working on the Cuneo's. My respect level is so high now, I can just walk into a shop, talk to the owner, and they'll agree to allow the protection of the Corleones. Then I'll just casually walk up the stairs to the guy running the racket, pay him off, and casually walk out. Although every now and then, I'll grab one of the rival mobsters and throw em out the window.