quick price check in Germany, the shackles is 44€ something, plus shipping. By the way, I am kitesurfing since ~ 2000 something. In these days there was nothing serious on the market when it comes to safety. The only thing we had was this one on the picture. This design is the only thing !!!!! by Wichard useable that works when things get difficult.
What you have to change to get this stuff working even in the worst scenarios :
Replace the white string? In German it is called schnick schnack.
with a threaded axle made from V2A ( german for non-corrosive steel )
Add at both ends of the rod a small plastic ball.
No matter how ugly things get, you can hit either one or the other ball and the thing opens. If you hit your belly during what ever trick, it will open.
I would prefer a Wichard over a lot of solutions when it comes to save my live.
As long as you thinking about " Should I or should I not"
We all are in love with the bass player.
https://www.youtube.com/watch?v=o8L2D2X ... 2c&index=2