ive had ten £10 houses in a row before now , done in less than an hour canvassing
weekend after same area had £20 in 4 hours
swings and roundabouts its all about luck in hititng an area with no window cleaner
drive around on sunny weekend afternoons looking for dirty windows and then hammer that area, i do that sad innit
or systematically work through an area ie a page of az at atime till you know you have had an answer off everyone there, then move through an area say ten pages then back to beginning
you will soon get a presence and start to pick up work when and if another cleaner leaves or gets sloppy