Have any of the antennas been mounted above the roof?? Can you mount above the roof?? The window in the picture is what direction?? WNED-DT Real channel 43 PBS is at 162 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. I recommend a Winegard HD9095P or Antennas direct 91XG antenna aimed at about 162 degree magnetic compass mounted above the roof with a good shot through the trees. Yes I know you said no 6 foot antennas , The HD9095P or 91XG have the gain that is needed for reception. You can call or E-Mail Antennas Direct and ask about the correct way to stack 2 DB4e antennas. Do not use a antenna amplifier with any of the antennas.