I look for a "gypsy" on the street or in alleyways. I approach him normally wearing shorts and sneakers and start the conversation off by either wispering "change money, change money" or "hello my friend"

No, actually I use ATMs once there. I never use the airport money changers. If you are going to rent a car, make the reservation before you go. Typically you will save about 50% over what you'd pay if you reserved it once there. Verify with your credit card company that your card covers rental car insurance.