Maybe I'm the exception but I seem to catch them just fine on imported quick frozen that are headless, tail on, peeled and devained. I get the large size and make 4 pcs of bait per shrimp. I saw an older gentleman catching them on a pink and white Doc's Goofy jig with a pink teaser today and yesterday. He would throw it out, let it sink to the bottom and whip the rod tip up and let the jig settle to the bottom and repeat. He and another guy outfished everyone who were using cut shrimp.

