The answer to this is a question, ARE YOU HAPPY WITH 20??
Forget what everybody else says if your happy at the rate of new customers thats all that matters.
Door knocking is by far the best way to gain quality customers plus it will save you time, you put through a leaflet then next day you get a call to quote and have to go back, rather than knock door, quote if interested secure job!!!!
In real terms how much are you looking to earn, you can then roughly work out how many customers you need.
Ive been going three months and got 119 customers, 80% through door knocking the rest through word of mouth, ideally im looking for another 50 or so customers this will then put me roughly where i would like to be money wise, i think and hope
I had some good advise from here only other day and it was to vary the time when you clean and maybe do the round in a different order so different people will see you out and about, tried this on 2 days last week and picked up 4 customers which is worth over £50 a month or £650 extra per year!!!! GET IN!!!
Andy