From December through to late April is often avoided by many saltwater flyfishers and in fact its not until the warmer months of May and June that many will begin their fishing at all. I can understand this and there have been several points in time when I felt this way too but through some perserverance and with a little hard work there are some good tactics that can greatly increase your chances, difficult as it is and slim as they are!
Late Winter early Spring tactics for bass fishing - a link to notes from the past
Don't exclude fly fishing tactics for bass from your lure fishing or vice versa - a 'blended' approach creates more opportunities.