“Stripping line” is a trick familiar to experienced anglers. They know that they have a better chance of hooking the fish if they create some slack on their line instead of yanking the line at the first nibble. There is an important lesson for salespeople here. Pushing against prospects just makes them push back harder, so that no one makes any progress. So instead of pushing them in the direction you want them to go, try pulling them away from it and then letting go.