true but thats what ive got a pure freedom trolley for this is just for the odd job cutting threw terace housesAlways handy to have a bit more water carrying capacity than what you need...saves running back to the van just for an couple of litres of water, if when doing a regular clean and you find the windows dirtier than usual
Like I said, you don't have to fill/brim it every time...but the option is there.