I would suggest having a few different types and sizes of jigs on hand on any jigging trip. Some days they will hit anything that moves, sometimes it's the size of what they are feeding on that needs to be matched,and other days they SEEM picky, and hit what the other guys are throwing, and of course it's always something that you do not have. I say "seems" because sometimes it's the action imparted by the fisherman ( bouncing bottom, speed of retrieve, retrieve-pause-retrieve, dead fall, etc. ) that gets the strikes, but because he has a different jig, others that are not imparting the same action feel the jig is "Magic".
Yes, at times it IS the jig, as one time aboard a local party boat that GOLD Hammered Jigs were the hot thing that the Stripers wanted, period! I never even owned such a gaudy looking thing, and they were not for sale on board, then or anytime after. All we could do is watch as the guys from Asbury ,Brooklyn , and Staten Island hooked fish after fish, but that was a very rare occasion. ( Yes, I do now own some of those jigs, but don't tell my friends & family)
So, when others are jigging up the fish and you are not connecting, either ask or watch what the successfull anglers are doing and attempt to do the same, I can assure you that you will catch some fish too. <'((((><