Trot line for crabs?

Anyone try this?
Is it legal in BC?
https://www.youtube.com/watch?time_continue=2&v=K57US0GK1-c

We visited a friend in Maryland about 10 years ago, and I got to go out and do this same thing, albeit not in a kayak. The first thing I did when I got back to Crescent City was to look up and see if this was legal here. Nope. But it sure was a lot of fun back there.

He has an interesting rig.  I don't know if it translates to here, but I am a lazy crabber.  If I am camping near a bay, I will drop the pots and let them sit over night.  If I am on the ocean, I drop one pot on the way out for salmon or rockfish and pull it on my way back in. That is usually all it takes for a limit.