The hedge
You need defenders with some quickness and good feet to hedge well, which is why offenses pick with their post player as their defenders typically lack both.
Good defensive rotation is needed to cover the picker who dives to the goal, and the guard who was screened has to chase hard over the pick and recover good defensive position so the post defender doesn't have to stay on the perimeter too long.
I'm always surprised at how much contact refs allow by the hedging defender that would draw a certain foul if done by the on-ball defender.
In terms of attacking the hedge, a strong dribbler should attack the topside hip of the hedger, draw and maintain the contact and force the whistle. The hedge works best against tentative ball handlers who back off and let the play be disrupted.