For a one antenna solution install HBU22 aimed at about 55 degree magnetic compass.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/point.html.
About 55 degree is where the weak Tv stations/channels are at , the HBU22 does have some forward gain to increase the reception in that direction.
And the HBU22 is not a very directional antenna it will receive the Strong signals coming from the other directions.
Use a Channel Master CM3414 distribution amplifier to send the signals out to the Tv's.
As always , it is best to put a antenna at a location that has the least amount of trees and tree leaves in the way of reception.
Looking at the Pending Applications Included - Digital Only , of the tvfool radar map plot and channel list I see the Tv stations are the directions of , north , north east , east , south east , south.
Here are some roof top 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 at solidsignal by typing the word ronard in the solidsignal search box.
Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.antennacraft.net ,
http://www.channelmasterstore.com ,
http://www.amazon.com.
The Tv's Must Channel Scan for the Digital Broadcast Tv Channels sometimes named the 'Air Channels' or 'Antenna Channels' in the Tv setup menu because the Tv transmissions travel through the air from the transmitting antenna to the receiving antenna.
DO NOT channel scan for cable tv channels.