I haven't installed a C-Band dish since the 80's, but I did a lot of them back in the day. Mostly 12 footers. I worked out a system that never failed me, and rarely took more than about 30 minutes, usually more like 5 minutes. Since I was working in Oregon, all the Satellites were between South, and the horizon to the East.
POLE MUST BE PERFECTLY PLUMB! YES PERFECT! 12 footers have a very narrow beamwidth, and you will not track perfectly unless you have met this requirement.
1. First, setup the feed, center and peak everything for max signal.
2. Set elevation and declination on polar mount. I used a quality compass and one of those quality surveyers inclinometers, the kind you look through. You can get OK results with the carpenter type too.
3. Lockdown the mount facing South.
4. Move the dish on polar mount to the Satellite closest to South, stop at the Azimuth setting that gives max signal, lock down Az. Peak elevation for max signal. In Oregon we were lucky to have a Sat. (F1) that was due South.
5. Move Az. to the furthest East bird (or I suppose if you are in the East, the furthest West Bird), and hopefully you have a signal. Lock down Az. on max signal. Loosen mount on pole, and slowly move entire dish and mount back and forth peaking on strongest signal. Tighten mount bolts.
6. Go back to Sat. closest to South, and lock down Az. when you get max signal. Peak signal by adjusting elevation.
7. Repeat step 5.
8. Repeat step 6.
9. Continue until there is no tracking error. I usually had it after 2 or 3 trips from East to South.
Several times I had the dish tracking perfectly just using my instruments and aligning by eyeball, but that is rare.