Sharing one of my most recent sunset shots, too. I applied 1 degree of tilt downwards to alter the plane of focus and another 3 degrees shift to straighten the terminal structures on the horizon.
Canon EOS 5D Mark III ı Canon TS-E24mm f/3.5L II ı Singh Ray LB Warming Polarizer ı Singh Ray 0.9 Reverse ND Grad Filter ı 24mm ı 25s ı f/16 ı ISO 100
Finale by shutterwideshut on Flickr
I used to use the Singh-Ray warming polariser and reverse grad a lot (probably too much ). I've recently got a revers grad for my Lee system, but haven't had too many opportunities to use it yet. It's good to be reminded what results it can produce though.