thanks for the replies
my plan is as follows
i have a 400 L tank in the van, a sack truck with battery , a empty 25 L barrel and a sub pump to pump from 400 L tank to barrel
keep in mind my round is very compact, i do most houses in the roads / streets i work, so i park up the van once and it stays put, i used to pop back to the van and change the barrel over for a full barrel, now i plan to just refill the barrel, i have a 14 L per min sub pump, thus 2 mins refill time ( i can live with that )
the hose will be for the bigger jobs i have that i can park on the drive, also for 1 area that is set in a valley and has houses with steps up to the garden, park cart in front and pull out some hose and clean away
i plan to use 6mm micro pipe, which i hope will not be too heavy with the water in
i do plan to get used to the hose on the bigger houses or 1 off houses that i do and then if its easier i will use a hose for all my work, though the thought of moving my van every 2 or 3 houses really doesnt do it for me