Greetings Sandcrab!
I'm hoping to get a bit of Susquehanna fishing in this year. My wife "inherited" a boat from her brother, who moved up to a larger model (and he doesn't even fish!) The boat's in Port Deposit MD, so that will put me in range of both the Conowingo (or at least as close as they'll let you get -- last I heard was 400 yds) and the Flats. I had a buddy who use to bass fish on the Redman Tournament Trail, and he was complaining about the stripers on the Flats ten years ago. They should be thicker than ever now -- however, I doubt I'll be down there before April. Besides, most of the fishermen in the Port Deposit area seem to target white and yellow perch in March (or maybe they just don't like fishing for stripers!) Anyway, most of the 'spawners' will be in the rivers in April. I know that when trophy fishing in the Lower Chesapeake Bay in early May you catch postspawn fish making a hasty retreat to the Atlantic.
Of course, at this point I'd probably welcome a toadie!