In March, we had the best luck with pins at HS. It was after 4pm. One line of thinking was to get to the parks early and start pin trading with CMs right away, when their laynards are fresh. I don't know if that line of thinking benefited us much. The traders outside Pin Trader at DTD vary. Some are fair to deal with and others are known as sharks. After talking with some of the fair traders, they told us who the sharks were and not to trade with them.