Alright Jack, new plan. Throw away the shad in your freezer.
Now, go to Wal-Mart, Gander Mtn, or whatever you have near. But, I know those two places sell these.
http://www.stormlures.com/products/luresdetail.cfm?modelName=wildeye_swim_shad234&freshorsalt=Fresh&type=soft_luresGrab the bluegill one and the shiner chartruese silver. Get them in the 3 inch size. Be sure to grab the ones that are swim shad and not the curly tails. They are pretty cheap too, 6 for 3 bucks. Not bad. Smallies and largemouth loves these things. I kill them on them. Put these on your bait pole. Throw them out into the river. I've been doing good throwing them into heavy current, large rocky areas. All you got to do is real in. Now, when you catch one, put it in your bait bucket. Keep it alive. Oh, and don't tell the OGFers. I don't think they like the next step.
After you got a few between 10-15 inches. Take them, along with your cat poles, to your favorite spot. Hook them with at least a 7/0 kahle or J. I'll let you choose. I prefer the kahle. The bigger ones I hook through the nose hole, smaller ones in the tail. You will get a bite if the Sciota is anything like the GMR.
I am beginning to beleive bass is by far the main diet for flatties on the GMR. It is loaded with 10-14 inchers, so why not. There are probably more of those than decent size shad. I rarely DONT get a bite when using bass. And I hardly like to fish unless I have them for bait either.
Good luck man. It will get better.