So,
To release, or unhook the halyard, you pull up on it, then pull the other line (the one that's in the little hole on the hole end), to rotate the hook, which enables it to un-hook, and drop the jib?

I'm asking 'cause one of the skips I sail with often has trouble when trying to take down the jib.
Actually, it also seems that it it hard to get hooked in the first place.

I realize this system is supposed to be better, but apparently a simple step is missed, and the system seems to suck most of the time.
When trying to 'hook' the jib in rigging, the line going from the end of the hook, back down to the bottom seems to 'cover' the hook and keep the ring from going in the hook.

I don't own a I20, yet anyways, but I stayed at a holiday inn express last night.

David,
I'm sure you know how to work this system well, please expand on what I've mentioned, so next season, I can make this part of rigging much easier on my skipper.
I do realize it should work well, but it rarely does, often having to put the boat on it's side, just to get the jib rigged, or off the hook. And that's not off the hook!