Great news......brought the coach home this morning (getting it washed, and heading out to Temecula again tomorrow for another soccer tournament), hooked up my portable macerator pump, and emptied the black tank in about 4 minutes....yahoooo!!! Worked flawlessly! Didn't take any pictures of the "process" as I'm sure no one here needs that image in their brains today...
No runs, no drips, no errors as Johnny Bench used to say in that Krylon commercial years ago. No black water on the black top. Filled up the black tank twice with clean water and pumped it back out as is my practice.