Are there ways to increase performance in light or gusty winds?
Large kite require constant attention in unsteady winds. That’s just a fact of kiteflying life. Jerking the line doesn’t help. That will just increase wind problems when you stop pulling. One answer is to stand behind the crown and grasp the trailing edge with both hands. Hold the fabric about two or three feet apart and pull your hands together. This has the effect of shrinking the inside diameter which allows the sail to hold wind better. Practice and experiment.