According to the Photographers’ Ephemeris (above), the sculpture is oriented NW (the tail) to SE (the head) by the major axis of the elliptical roundabout. This means the tail can possibly catch direct sun for a few minutes at dusk and light up the rusty plow and highlight shiny surfaces.
I wasn’t very successful with that sun on this first trip, but the roundabout is a great place to lurk. As the sun faded, I tried to catch cars and passengers negotiating their turns.
After dusk I used two strobes with small softboxes to light the underside. The Nikon Creative Lighting System allowed me to vary power settings remotely however I often was at full power. I was the only person available for moving & testing the lights in each set-up. A better solution would involve two assistants, more powerful lights, booms & stands, power, money…..