the shirts are a good idea , just dont over do it mate, i go out with a clip board
yes make notes on streets , write
143 johns street dirty (customer shouting abuse)=never return
145 johns street clean (customer has a window cleaner)=try in 6 months
147 johns street dirty (customer says he does them himself)=try in 6 months
149 johns street dirty (customer is interested must talk to husband)=call tomorrow
151 johns street dirty (confirmed GO Ahead) £15 every 2 months
And So on
Otherwise you will not remember where and what you been doing!