bert wrote: (...)why do you not put a ball on both ends of the line to make it easier to grab?
If you have a closer look on these pics you will notice that there is a small conical piece of metal on one end of the line. This is the main part of the concept, and this gives it all its strength... (it has been took on an old pen)
Nevermind the direction you pull on the ball, if you pull it hard enough, this conical part will penetrate inside the shackle and release the trigger.
The line is made with a bungee to avoid accidental releases. You can touch it, pull it slightly and it won't release, but if you really pull it, it will release.
I had sometimes troubles of unwanted release when using the ring based wichard (#21 to 23), on big crashes on the water, including kiteloop landings. Even if it was the most reliable trigger system, it was a bit too sensitive for some hardcore moves... hence some thoughts about something different... Even if it is not as much reliable, this suits my needings and probably the ones someone else.
find yours !