I sort of assumed it would power and depower like a kiteboarding kite to create work. You could probably depower by collapsing the kite leading edge and draggin

I sort of assumed it would power and depower like a kiteboarding kite to create work. You could probably depower by collapsing the kite leading edge and dragging it back in but that seems less efficient than flying it in a figure 8 to power and depower.