Of course that could be done with the right people, equipment and soap.
I saw several jobs where two guys did the washing and one applied the acid/degreaser when needed and they did 40 pieces in 1hr 45min on several jobs and they were dirty.
By myself I did regular cargo trailers from the small to the enclosed horse trailer at a trailer store that had mud all over them after the tornado came through and with a helper just moving hoses, I washed 46 of those trailers in 3 hours. So that shows you it can be done, just need a couple more people.
It sure is amazing how people think something can't be done and they don't want to believe it is possible since they can't do it.
Years ago people thought it took 2-6 hours to wash a house and scrub the gutters. I do them by myself in 2 hours or less for most 2 story 3000sq.ft. homes.
That is why these bbs's are here, to educate and inform everyone of the new ways, new chems and to help each other.
I guess by coming here and talking bad about someone's methods or how fast they work maybe you think that makes you cool or something????
Wrong....... It just shows how closed minded you are and many, many people laugh at you but do not tell you.
Do yourself a big favor and try to learn from these people. Most will help if you do not try to offend them or say negative things about them or how they work in disbelief.
I am sure you will learn a lot of things here if you open your mind and eyes.
I guess you think it is not possible to do 500 decks per year???
A few guys out here do that many and more every year.
I guess you think that nobody can clean/strip and brighten a 500 sq.ft. deck in under 2 or 3 hours? It is done every day of the week when the weather is good. And....they typically seal that deck in under 2.5 hours also.
Be open minded here and you will learn a lot.
If you are not here to learn, make friends and help then why are you here?