Moust important is the where you be more successuful in the suburbs areas places as laundrymates or any public places in the areas than in low income parts of city also use time in your strategy best time are always in the midle month and midle of the week try summer activities as festivals concert etc. try make deal whit consessionares at the place offer small amount of money 20-50$ a day then you have great place for give your cards to people whitout to spending all day there.
