Well here's my 2 cents worth( couldn't find the cent symbol) as per your notes. I have not cooked on one of these cookers, or seen one. I have cooked several on block pits with burned down coals. We always put a good amount of salt all over to start, this helps some fat render. Take care not to puncture the skin, as this holds in the fat which can be spooned off. We start meat side down for 8 to 10 hours. This helps some fat cook out and get good color. Usually stay around 205-215. spread coals all under to start. Keep spreading all under for the first 4-5 hours, then just start firing the hams and shoulders. After we flip, sprinkle some more salt and some white vinegar on the meat. As it gets closer to being ready, the rendered fat will begin to pool in low spots. You can spoon this out, but leave some for moisture and flavor. A 125lb. or so hog is usually ready in about 20 hrs. like this. As it gets closer to done, push on the hams and shoulders to check for tenderness, if one gets done first, ease off on the coals. If the skin has no holes, you can pull and mix it as is with added sauce if wanted, or take out different parts and mix.
Sorry for the long paragraph, typing not my thing. Hope I didn't hijack your thread, just trying to share some things I have learned.