As a reversible kite likely leads to a loss of power, perhaps using a classical power kite could allow using not more space by making U-turn with zero radius, like on 0:31 of the video below:
If U-turn with zero radius can be executed with huge power kites, this can allow them to scale up more. In yo-yo configuration the reel-in phases occur during U-turn when the power is low because of slow motion in the edges of the flight window.