basket of radishes
The truth is other than Lubavitch shluchim (who were told by their Rebbe Zatzal to do so) there arent many people who would sacrifice to that extent to go do outreach in an out of the way place in the boondocks. Its extremely difficult to raise a family in these places and most frum Jews want to live in a city that has a vibrant Jewish community. Another point is that not everyone is dynamic to that extent that they can go to some place and just flip the place over and do Kiruv on a large scale.
If you want a better or more knowledgeable answer, call up Aish, Ohr Sameiach Gateways or Project Inspire and ask them. Im sure they will be able to answer you.