Mason-Dixon line is essentially the PA/MD border, so you are a couple of weeks early with that assessment for the northern range. That being said, as soon as there is an upswing in water temps I like a jerkbait and a chatterbait. As the water warms a tad into high 40s low 50s, a squarebill, spinnerbait, and a large swimbait. Once they start thinking of the beds, plastic creatures and jigs.