Hi Mike. I grew up just down the road from there on Kent Island and went to school in Centerville. Not much decoy/hunting stuff doing in Centerville. North of there in Havre de Grace there are couple of good stores and a museum. In Easton, if you walk around you will see some decoys here and there. On Tilghman Island, about 20 minutes south of Easton is the Tilghlman Island Country Store. Great baked goods and a half dozen of my decoys for sale in there. The Ward Museum in Salisbury is an hour+ down the road, although very interesting. In The Carpenter Street Saloon in St Micheals there are quite a few Madison Mitchell decoys hanging up and around in the place. Drapers Liquor Store in Centerville, right on Md 213 has a bunch of neat old guns hanging on the walls. You can't touch them, but they are neat to look at. The Maritime Museum in St Micheals is pretty neat. They showcase the seafood industry and touch on the importance of waterfowling. St Micheals now has their own brewery. I forget what its called but the beer is good. Tours and sampling. Its on the right just as you get into town.
Go north out of Centerville on 213 and you will come to Chestertown. I believe Remington Farms is right near by, altough its been years since I've been there. At one time you were allowed to drive through on a self guided tour. Maybe you still can. I'd call first.
As far as The Jetty in Grasonvile, even an old fart like me got hit on there. 'Nuff said. Several friends that are still in the area always comment favorably on the Tiki Bar in Kent Knarrows. Its only a mile or so down the road from the Jetty.
If you want to see some serious money, rent a speed boat in St Mich's and take a tour up the Miles River. As you come back down it towards St Mich's, turn right at the island and go up Hunting Creek. Very Pretty, Very Ducky.
John Bourbon