to be honest i find that if you work for 5 to 10 mins (depends how big the property is) then let your mate take over... keep sharing often and frequently you can do a third more in a day.... one pole 2 people sharing so that you never actually tire, plus the other person is moving the hose, stop it getting tangled etc etc... stops to chat to the customer whilst the other one is still working, fAg breaks, coffe breaks except lunch breaks which i think is important so we both stop.