I meant I would rather pull a QR in a total sh.t storm than try to unhook by the Billy method.
I've been hit by sustained storm winds of 50 plus knots of wind on an 11m C and pulled the QR and had it work. I would never try to pull out of the C-loop as my first option in that scenario. Bayflite and Billy were there that day. We saw the storm coming but pushed it a tad too long. We were going back to where we started (a ten minute run) when we got drilled.

I too have had a Surefire fail. It bent on me in an Oh-#$t scenario and kept me locked in.
The kite was looping out of control going toward shore at the SW.
If it wasn't for Zack Kaplan, odds are high I would have died. Odds are 100% I would have bare minimum broken a lot of stuff. He jumped on the kite and it's lines and stopped the kite. He cut his hand pretty bad. It was an honest to goodness hero move and I'll never forget it.

I never gave that Unsure not release system a second chance.