Yes snap swivels help... they don't eliminate twisting, but they do help minimize it and make it easier to eliminate it on the ground for the next flight. Longer lines in and of themselves won't really help eliminate twisting; it just takes longer for the twisting to accumulate to the point it starts to "reef" (partially close) the chute. Ideal length of shroud lines is generally considered to be 1.5-2X the width of the chute (from canopy to swivel). 1.5X is plenty.
Originally Posted by LaunchPad
Good luck! OL JR
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