Haven't tried it, but asked a co-worker this a.m. - suggested maybe Sandy Point State Park. Think there is a jetty that would get you out into the water. Don't know what other public options there are up that way. There are a few (very few) charter capt.s' that do fly fishing here on the bay. Wish you the best. If you were able to wander south of there a couple of hours I have a friend that is one of the minority that does fly fishing charters. Hope this helps.
MK