I have crabbed right off the municiple pier right there near the drawbridge and did really well. There was never anyone else crabbing there. I actually use to bring an electric burner and plug it in right on the pier and cook them as I caught them and eat some while crabbin
I haven't done it since 04 when I got my boat
The only two places is love creek marina ($)- can only really use traps- and rosedale beach near oak orchard, but you have to be there at high tide because when the tide is out there's only a few inches of water. There are usually a lot of people there anymore.
Good luck and have fun!