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Yes the metal siding of the double wide does a excellent job of blocking reception.
Install a ,
www.antennacraft.net , HBU11K antenna above the roof in such a manner that the roof and building are not , obstructing , impeding , blocking , reception in the directions of , North East , East , south East , South , North , North West.
Aim the HBU11K antenna at about 50 degree magnetic compass direction.
Here is how to aim antennas ,
www.kyes.com/antenna/pointing/pointing.html
Use a Real and Actual Magnetic compass to aim antenna.
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The Tv reception is strong signal strength at your location.
A antenna system amplifier is not required.
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For 1 Tv connected use No splitter.
For 2 Tv's connected use a 2 way splitter.
For 3 Tv's connected use a 3 way splitter.
For 4 Tv's connected use a 4 way splitter.
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As Always , trees and tree leaves , plants and plant leaves , have a Negative Effect on Broadcast Tv Reception and so do buildings and other obstructions in the directions of reception including your own roof and building.
Some and not all Negative Effects are.
Absorbing and Blocking Reception.
Multi-Path Reflections Tv Signals Bouncing All Around.
The Best Practice for Reliable Reception is to install the antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception including your own roof and building.
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Go into the Tv Setup Menu and select and channel scan for ~ Antenna Channels ~ ATSC Channels ~ DTV Channels ~ Air Channels ~.
Channel Scan for the ATSC-Digital Broadcast Tv Stations/Channels.
DO NOT select and channel scan for cable tv channels.