Thanks for the heads up re. your interest in WVUE. Even though it's a relatively weak signal, it should be receivable with the right antenna and a mounting location that is not obstructed by trees or buildings.
Given that you have 4 TVs to serve, a rotator is impractical... the control is going to be in one location and if there is a desire to aim in more than one direction... arrrrgh!
There are several ways to go about this still.
A premium solution that I would consider would be a Winegard HD7698P pointed at about 80° per a compass. Fit that antenna with a Winegard HDP-269 preamplifier. To power the preamp from inside the house (the power supply should be protected from the elements and the preamplifier needs to be located on the mast close to the antenna), you may need to replace the existing 4-way splitter with one that passes power...
http://www.antennasdirect.com/store/...Fe-DQgodLgMASg
Then, to get WVUE, you'll need to consider your households viewing needs/wants/habits. If you all agree that Saints games are all that's watched when available, a rotator may still make sense. If you are going to find the lack of normal viewing during Saints games a problem for one or more of the household, you'll need to consider the installation of a dedicated 'Saints' antenna. Which way makes sense for you?