Install a Winegard HD7696P antenna with a Antennas Direct CPA-19 preamp aimed at about 185 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. I recommend test reception with a 5 foot tripod mount. Just set the mount on the roof of the mobile home , the mount does not cost much and makes a good stand for testing. If the peak of the roof is , say , 15 feet above ground and the mount is 5 feet and the mast pipe gets the antenna another 5 feet above the top of the tripod then thats 25 feet above ground.
http://www.ronard.com/909911.html.
http://www.ronard.com. Here are some places to buy antennas and etc. ,
http://www.winegarddirect.com ,
http://www.antennasdirect.com ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.ramelectronics.net ,
http://www.tigerdirect.com. I expect that all the networks will be received and many more channels.