The Slingshot surefire spreader has just arrived - it consists of a similar system to the Naish spinning leash with the improvement of a sprung loaded hook release system.
The spreader attaches to any Dakine style harness - with a nylon covered rope that pivots/spins at the base of the spreader hook and leads to the depower release on one of the front lines
The spreader bar and grab release are designed for a Slingshot bar, but the rubberised section that fits to the slinghsot leader can simply be detached by undoing a grub screw and this system can fit any kite.