FWIW, here's my thoughts.
Flushing: We use tp for an initial wipe, which goes into the toilet. After that, to get completely clean, we use disposable wipes, which go into the trash can right next to the toilet. We start with only a small amount of water in the toilet, then add water as needed to fill the bowl fairly full, then flush. That habit means that we don't have much water in the bowl when traveling but still lets us use plenty of water to flush.
Dumping: I let about a gallon of grey water out first so that the hose is wet and to make sure that everything is properly connected. Then I close the grey valve and open the black. Some trailers have a tank flush connection on the Nautilus panel, which sprays the black tank. Ours does, but there is a leak at the connection that I need to fix, so I connect a hose to the clear plastic tube and flush the black tank some that way. Then I close the valve at the hose connection point and open one of the grey tank valves. That lets grey water into the black tank. Close the grey valve, open the final valve and dump. I do that until both grey tanks are pretty empty, then close the two grey valves, let the black get closer to empty, then flush with the hose, close the black valve and drain the last of the grey tanks. Finally, with the three tank valves closed I let the hose rinse the piles and sticky slinky for a few seconds. Turn the water off and put everything away.
Thank sensors, especially those on the black tanks, are notorious for saying the tank is full when you have just finished dumping. We always run off of our fresh water tank, so when the fresh is getting low it is time to dump and fill. Depending on where we are staying, that happens 2-3 times per week.
Flushing: We use tp for an initial wipe, which goes into the toilet. After that, to get completely clean, we use disposable wipes, which go into the trash can right next to the toilet. We start with only a small amount of water in the toilet, then add water as needed to fill the bowl fairly full, then flush. That habit means that we don't have much water in the bowl when traveling but still lets us use plenty of water to flush.
Dumping: I let about a gallon of grey water out first so that the hose is wet and to make sure that everything is properly connected. Then I close the grey valve and open the black. Some trailers have a tank flush connection on the Nautilus panel, which sprays the black tank. Ours does, but there is a leak at the connection that I need to fix, so I connect a hose to the clear plastic tube and flush the black tank some that way. Then I close the valve at the hose connection point and open one of the grey tank valves. That lets grey water into the black tank. Close the grey valve, open the final valve and dump. I do that until both grey tanks are pretty empty, then close the two grey valves, let the black get closer to empty, then flush with the hose, close the black valve and drain the last of the grey tanks. Finally, with the three tank valves closed I let the hose rinse the piles and sticky slinky for a few seconds. Turn the water off and put everything away.
Thank sensors, especially those on the black tanks, are notorious for saying the tank is full when you have just finished dumping. We always run off of our fresh water tank, so when the fresh is getting low it is time to dump and fill. Depending on where we are staying, that happens 2-3 times per week.