Planche Turnaround

Leave the platform with a Wide Mixed Grip. Get into a Planche position (either at the front or the backend). At the moment when you would otherwise make a catch, let go of the hand you didn't turn, and keeping your body straight, turn to take the bar again with the free hand.

A more advanced method involves using a Regular grip (ie not turning one hand) and letting both hands go at the peak as you turn before grabbing the bar again.