Nice report and nice catch!
As for circle hooks, I have used them off the beach when throwing bait and they work like they should 95% of the time. I noticed it definitely lowers the gut hooking ratio in most species, even skates!
Most of the time, I am not throwing just bait, so I usually don't have a problem.
It is a shame to have to throw those back when you know they are going to end up as crab bait. Too bad they haven't figured out a way to work something like that into the Regs. A complete waste!!