Best use of gray tank capacity

I have always found a dump site every 3 or 4 days and only once, found the shower pan quit draining.   Within an hour or two of that, all dumped and flushed.

For what it's worth, I put close to 12,000 miles a year so have used its facilities rather often.

  

Sounds like you are all dialed in!

For the price of a cheap hose you can connect to your mascerator and pump directly into your toilet, or get creative and make up a small hose, with screens, and pump directly into the black flush valve on your black tank.

The idea to " a small hose, with screens, and pump directly into the black flush valve on your black tank" would be a nightmare. Even if nothing blew up from the macerator pressure. 

The first time I read your advice, ""For the price of a cheap hose you can connect to your mascerator and pump directly into your toilet,"" I misunderstood, and thought you were instructing people to pump directly into their HOME toilet!      
(For the curious.....DONT!!!  It comes out very fast, and not at all neat. Your flush rate/volume may not keep up.  Go into your sewer/septic tank cleanout.    If on the road, or at a festival, maybe look for a 'port-o-let' somewhere..  )



But should the need arise, I would definitely use the Macerator>hose( extension if needed)>RV commode method. Should not even need the extension hose on my 2350.     

When I dump my tanks I run the 'fresh water' flush hose inside, and fill the black tank 1-2 times more as a flush.  Running grey water down the commode to transfer seems like a great idea!! Thanks!

Volke: In a pinch I have dumped into a toilet in my cellar.
I don't have an accessible cleanout so....
My rig is about 40' away from a cellar window and the toilet is just inside the window.
I connect a commercial garden hose I had laying around that is too heavy for actual gardening use and added a 6' piece of smaller more flexible hose to the end of that with no fitting on the far end. I just fish the flexible hose into the toilet well beyond the trap that is built into the toilet. pretty much the whole 6'.
Turn on the macerator and let her rip!

Never had anything back up into the bowl. (water may turn a bit brown)
The key is getting a few feet past the toilet trap.

I only do this when absolutely necessary because just like you my wife watches all that I do, and well... she is not a fan of this method. Happy wife, happy life. 

Oh yea, forgot one important step.
I clamped the hose to the rim of the bowl using a large spring clamp assuring that the pressure could not force the hose to back out of the toilet causing a disaster.

Gotta admit I was pretty nervous the first time I tried this when I had to go out to the RV to turn on the pump and couldn't see what was happening inside.

Oh well, no problems. 

Mascerator pumps about 10gpm, similar to a city hookup,  reduce it with a valve and stand by the off switch. I'd rather pump grey water, than herd turds....