For metal jigs and vibes, use assist hooks when you want the hook point riding higher and snagging less than a treble.
Match hook size to jig size: the Clarkspoon singles are offered in 2/0, 3/0, and 4/0; the JYG pack is 4/0.
If you’re replacing hooks on a jig that already has attachment points, check whether you need inline singles or cord-tied assist hooks before ordering.
When to switch
Switch to assist hooks if your jig is getting short strikes or the factory hooks are bent, dull, or missing.
Switch to inline singles if you want a cleaner replacement for a spoon or jig and less hardware than a treble.
If you’re rigging a specific offshore jig body with no hooks included, you may need to choose the jig first and then add the right hook style separately.