I realized that I was being lazy and uninteresting with my F.O.A.M. efforts to date. I couldn't get around to getting all four photos shot in one day, so I just collected images over time and pumped out a quadtych when I got all four.
On my walk today on the Towpath Trail (Botzum to Smith Rd.), I realized this approach was boring. This marks my first real attempt at F.O.A.M. where all four shots were taken on the same day.