I camp and launch at River Front Campground in Duncannon a lot, in fact I've fished that stretch from Montgomery Ferry down to the Statue since the late 80s. The other posters gave you great information so I can only add a little bit. As you were already told, the weather can really vary as can the river level but I will try to get you a good range of baits that should have you covered. Tubes, if you want to keep it simple you need to have only 2 color tubes to limit what you carry, those would be green pumpkin if the water is warm and by warm I mean above 52 and lower water temp you want smoke purple. Use inside jig heads, 1/8oz to 1/4oz depending on current, and then other baits for that time of year that I use with regular success are as follows. Hair jigs, not large ones but ones ranging in size from 1/16oz to 1/4oz, if the current is fast with high water the fish will hold tight to the bank around eddies and other slack water areas, a small hair jig or tube will work well. Jerkbaits are amazing if you have some water clarity which generally means a low flow and that could be the case depending on how the rest of the winter pans out. Don't rule out cranks either, I like one knocker lipless baits if the water is heavily stained, I like the rattlers when the water has some clarity, also shallow diving flat side cranks work extremely well, Rapala DT Flat 3s are good as well as a Bomber Flat A, and a shad rap is good if you don't have really fast heavy current. You got great suggestions, and I left out swim baits, but a 3" to 4" finesse swimbait fished on a slow steady retrieve or fished like a tube can work wonders, and if you have of the 3" Mann's Stingray grubs in avocado or green pumpkin, well those are killer as well, but having a combination of those things will have you covered.