OK, I'm going to give up all future profit from this invention - because I love you all so much.
(And know that everyone will steal it anyway and force me to sue... or threaten to sue... or just whine about the bastards...)
This is actually a pic of an existing Rotovac head to give you the idea. Take any rotary head with HDPE sliders, or cram HDPE sliders into the slots on any rotary tool you have, and use it for rug agitation in your flooded, soapy pit. Stop killing yourself with a third-world scraper on a stick!
This idea is actually the slumdog version of the roller head I wanted to make for rug pit agitation, but an industry patent troll has already patented any possible combination of roller and carpet cleaning, so this is the next best thing.