At my last house, I had a 5ft tall old antenna tripod I bought cheap at an auction. It stood slightly away from my c-band dish so as not to interfere with movement, and had my OTA antennas on it.
I had a spare coax running from the wiring hub box near the c-band dish, to the antennas. It was held down with some old concrete blocks, and a couple old tires (with metal wheels for weight) laying against the bottom 3 sides. I had a 15' mast coming out of it, and it worked perfectly.
Sure looked a lot better than that mess above that looks like it's in the way of the dish moving.