With the thin spread of the Squid, recently I have been having better success with a single weighted Squid jig than ganions (sp). Also, I have been working the jig more slowly with a delay at the bottom of the lift and drop. And one last thing, when you find them, be sure to get some on the hook and in the water cause they attract fish.
Disclaimer: The writer of this post knows next to nothing about catching Squid nor Halibut but is an expert in dumb luck once in a while.