Don't drill if you don't have to . You will just bring in more noise . I use to use 102 " whips in the seventies ; but started to like the magnetic mounts . I have a Wilson little will when I need it for long trips . If you want more of an antenna go for the Wilson 1000 or 5000 . Once you start drilling , thats done and you can't change it . The Wilson will take any amount of watts you would ever dream of . You are going to an area where they are looking to steal things , take the mag mount of . Think about it.