Patjay--Right now is a prime time for deep ledge fishing..the fish are wanting to transition from deep water up to spawn..they will sit on these ledges just waiting for that water temperature to rise..day by day they move up/down these ledges depending on cold fronts or warming trends...if you can find structure in 15-20 fow right now, FISH IT! they will gradually make their way to the banks as the water temp rises...get yourself some 1/4 or 1/8 jigs and just vertical jig or troll them on the ledges till you find structure...no slip bobber or cork needed until they get into the 5-10 foot range..