Sod that.
No quick money, no clean.
I don't work long enough to do 30 houses.
The most you could do an hour consistantly all day is about 3 and a bit.
So if you say 7 every two hours, then that's an 8 hour day.

I'm not that desperate for cash!
Oh, and Tosh.
You've never seen me knock out a whole house.
It's not squeegee speed, it's the whole technique and organisation.
Might not look exceptionally quick, but as a job I fly through.