Smuggler

To be a smuggler, you go into the U-G Mission Board and seek out missions that involve Smuggling. Most of these missions are worth more than the regular missions so it is a quite profitable business. It does have it's dangerous side, if you get cought too many times, you could be wanted for the police, but this rarely happens. It is even more rare to get on the Most Wanted list by doing this.

Tips

1. Make sure you can make the missions: Underground missions are worth more than regular missions on both credits, and mission score. So if you fail, there is a chance you won't get many good missions, and other repercussions are also possible.
2. Make sure you lay low if you get a wanted level until you are clean again. Do some regular missions or trade, that way you stay off of the Most Wanted List.