Whitby may be a good candidate for one of these dual-four-bay antennas. There's one model where you can aim each of the two antennas in different directions. In your case you could aim one 167° toward Buffalo South and the other 231° toward CN tower, which should easily capture Hamilton at 221°.

I haven't used this model, but my experience tells me that this is a case where it should work better as there is close to 90° difference between the two antennas.