Don't quit.....you'll never be able to have the bragging rights that come with a big fish or a quick limit.
We all have bad catchin days....comes with the territory.
My thoughts about your string of bad fishing days are:
A) The fish don't like your presentation.
B) You are fishing where the fish aren't at different times of the year.
C) You're getting stuck in a "pattern" of fishing.
I agree with the ideas mentioned above, HO with some folks and ask lots of questions, especially about baits weights and theory, and particulars of the area you mainly fish.
For trolling Mid-Bay contact Capt.Wayne Morgan, he specializes in hands-on instructional charters.....when you come back to the dock you will be tired, dirty, smell like fish and well educated about trolling.
Capt. John Deering is a jigging, bird chasing Master...Mid-Bay area.
There are lots of others, find some In Your Area to fish with.
The Bay is a varied watershed, the skills used on the Flats, working the Bay Bridge, Solomons area and south are all different skill sets.
Buy a chart book and study a 10 mile radius from your launch point.....most of your fishing will be inside this area.....you need to know the ledges, humps, channels, wrecks, shoals, shorelines, etc.
Successful fishing is a science and has to be approached as such, the more info the better.
LAST - Read more on TidalFish !!!!