The Tv transmissions are Strong at you location. 
Here are some Above The Roof antenna mounts , 
http://www.ronard.com/909911.html , 
http://www.ronard.com/34424560.html , 
http://www.ronard.com/ychim.html , 
http://www.ronard.com . 
Buy the ronard antenna mounts by typing the word ronard in the solidsignal search box or buy from ronard. 
REPLACE the RG-6 and RG-59 with NEW RG-6 coax. 
It looks like a better aim direction is about 140 degree magnetic compass. As Always the aim point is a starting aim point , the antenna can be turned to the left and right to get better reception of the channels to be received. 
Here is how to aim antennas , 
http://www.kyes.com/antenna/pointing/pointing.html. 
Pending Applications Included in the tvfool radar report lists the REAL Digital Tv channels that are transmitted and received , and also lists the Virtual channels. 
For reception of the green and yellow zone Pending Applications Included ,  one or two Tv's connected no amplifier is required. 
For one 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 Tvs connected use a 4 way splitter.
For 3 or 4 tv's connected , might require a Channel Master CM3414 distribution amplifier. Try it with a 3 or 4 way splitter first. 
  Every split that takes place reduces the signal strength. 
Here are some places to buy supplies , 
http://www.solidsignal.com , 
http://www.amazon.com , 
http://www.channelmasterstore.com