Often, I prefer to move the van rather than stretch the hose. There is one road where I could clean about 10 without moving the van, but I find the hassle of managing the hose means it's easier to move the van. Cul de sacs are great for this however. Tomorrow I've got one with 4 four bedders - three with conservatories, but to be honest I often feel knackered after doing them and need a break. I honestly think that from "an ideal work" point of view I prefer a stop with two house then move on. Much easier and a rest in between.