Yup, no laws.
Originally, it was gonna be mounted on the roof. But even before I bought it I had intentions of cutting the roof off and welding in a rollbar to make a unibody truck. So a rear mount made more sense since I wouldnt have to move it. Second concern was catching it on branches, lots of low trees where I wheel hence the spring. A stainless whip would have worked since they dont snap but they were more than I was willing to pay. Third was a fluke, I ordered a 4ft antenna casue it was $2 cheaper than a 3ft antenna and it looked extra goofy, like a 5th telletubby or something lol.
The cable I got was 18ft long so location wasnt an issue. And since the carpet is part of a hill somewhere now routing was as easy as screwing in some cable clamps. Ill probably affix a flag to it or something later on.