If you want a bar that can be used on both single line and dual line (IDS style) safety kites, then you could make one like mine. My set-up also allows a long “throw”, and the ability to spin the bar, and the use of a rope slider spreader bar, and no chicken loop. The ability to self-land and self-launch are made much easier, with the uncluttered 4 lines leaving the bar, being easily identified for manipulation for maneuvers, like reverse launching, etc.
To reduce the clutter, the “trim strap” for the power line adjusting has been transferred to the rear lines.
The safety leash has been extremely shortened to prevent it from wrapping around the end of the bar, when tumbled in the surf... or when the bar is dropped and re-grabbed during a failed self-landing procedure.
DUAL LINE SAFETY PROCEDURE:
The procedure to throw the kite to a dual line safety is initiated by pushing the bar against the stopper ball, which dislodges the stopper ball and allows the bar to slide up the front kite lines, where a fixed ball at 20 feet stops the bar. This little stopper ball is held by just enough friction by the “bulge” in the one power line, so that you can spin the bar, but also, so slight a force, that you can also easily push the bar to free the ball from the bulge.
SINGLE LINE SAFETY PROCEDURE:
The procedure to throw the kite to a single line safety is initiated by releasing the shackle, which acts as the primary release, and when the bar is let go, the bar slides up the one front line and stops at the second ball, which is firmly fixed to the line, about 20 feet from the kiter.
Some modification to a conventional bar is needed
The pictures are self-explanatory, if you study them.