I keep a boat at Worton Creek, just south of the Sassafrass R. and Still Pond.
I would strongly advise the use of an ablative bottom paint, especially vs. the huge amount of barnacles that will attach if you dont.
The prevailing winds over the Chesapeake have changed in the past few years, changed to westerly from the normal southwesterly and the west winds dont 'turn over' the bay sufficiently .... and on the Northern Cheasapeake we now have a humongous slime and barnacle problem. I recently changed to Micron-extra since the Micron CSC doesnt do a good enough job of slime prevention ... with enhanced slime the barnacles have a much better chance to adhere to even ablative type paint. The Micron-extra retards the slime ... hence few barnacles.