[WDCreech]

"I might go tubeless
Sooooo, uhm what is all this talk about hand-soap , like we own the little green bottle of Palmolive dishpan hand soap. Is that the trick stuff?"

I don't know about "hand soap", but I always use Dawn dishwashing liquid. I keep a bottle in the garage, just for mounting tires. I coat the inside of the tire completely with a clean shop rag soaked with Dawn, and then the bead. It has always worked good for me.