I recommend aim one antenna at about 125 degree magnetic compass , to receive the stations to the south east and WXII and WUNL are so strong they will be received through the back side of the antenna. The other antenna is aimed at about 233 degree magnetic compass. I recommend separate coax from each antenna all the way to the tv. And at the tv location connect the 2 separate coax to a remote control AB27RS A/B antenna switch. The output of the A/B switch goes to the tv. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html