Hi Loren,
Jybes are with the AP on. My most exciting jybe was at around 20kts of wind, I always utter a few prayers when I start jybes above 17 kts. The AP in use is 100% my own design, including the electronics (computer). I have some magic coded in to help it all stay stable in jybe mode, but no matter what you do there are going to be conditions where the best solution is to warp yourself around the mast, clip in, and hang on.