Hi John
It's no secret, you probably would be able to guess as you know your stuff
But getting back to the original question, if I used a porty I probably wouldn't use plain water as you need all the help you can get tbh, so depending on the clean I would use ultimate master or F90 in the rinse, after spraying and agitating with desired product and have the water as hot as possible if running F90. But this is very rare for me, maybe once or twice a year, I don't like this way as I do prefer an acid finish, but that's the nature of the beast I guess.