They are rumoured to come up out of the depths into shallow rock piles. The depth isn't as imprtant as the rise in elevation. As for jigs, from what I have heard blue and glow are favored. I caught one the other night on an orage glow forrage minnow tipped with wax worms, so I supect they are not too picky, I suspect finding them is more imprtant that what you are presenting them.
Oddfish