One of my good fishing friends is Tyler Nonn, who runs Tidewater Charters out of Elkton, MD. He has honed his craft over the years and is head guide up at Hoodoo Lodge in Alaska. In the spring, he runs a charter service out of the Chesapeake Bay and Susquehanna Flats for huge stripers. In addition, he runs steelhead and big brown trout trips throughout the fall and winter. He is probably the fishiest guy I know and is mad fun to fish with.
He has open dates this fall and winter targeting large predatory brown trout on several Pennsylvania rivers. I was able to spend a few days fishing with him in the middle of February where we boated several fish a day, the smallest of which was 18". I thought I had the largest fish of the trip at 26 inches until Tyler cranked out a 27 inch monster.
If your looking for large fish and are tired of the crowds associated with tributary fishing in the fall, this is a great alternative. Also, why freeze to death knee deep in a run when you can have a heated jet boat and access to an entire river? Either way, if you enjoy chucking large streamers for big browns, hit him up and schedule a trip. Space is limited but I am sure you can also ask about steelhead, musky, or big striper trips throughout the year.
You won't be disappointed.