There are several 'right' ways to get good reception in your situation.
Have you tried using an indoor antenna?
http://forum.tvfool.com/showthread.php?t=2828
My preference would be to take full advantage of the outdoor mounting option. A combination of an Antennas Direct DB2e and an Antennacraft Y-5713 would be my choice.
I would start by aiming the DB2e south, but be prepared to experiment with the aim, don't rule out trying all points of the compass to find the best compromise aim point at your location. Also be ready to experiment with the reflector grid installed... and removed, which will make the antenna better able to receive from the rear. (With the grid on, the DB2e is a fairly directional antenna. Removing the reflector grid will make it less so.)
I would aim the Y-5713 at WTVI-PBS, real CH-11 (143° compass) though if you wanted to add WSPA-CBS, real CH-7 you could aim at 260° and still expect to receive WTVI.
A simple UVSJ would merge the signals from both antennas into a single down-lead. I would make all of the aim adjustments with only one TV connected (no splitters or amplifiers) then if you find that splitter loss causes you to loose one or more signals, add a CM-3410 ahead of the splitter. (Terminate any unused splitter ports with 75Ω terminator caps.)
Oh, and by the way, feel free to contribute to other threads.