OK, if I have current flow from say east to west, I'm looking for ledges that run north/south. I think crappie will do their best to get out of a hard current. The bottom side of up current on those ledges or the points on that ledge will always be where I start looking. Too many of us get comfortable with our favorite spots and don't use our expensive electronics to eliminate water that isn't holding fish. The back sides of any structure that breaks the current will be the first place I start looking. Spider rigging until the surface temps get to high 40s then I break out the longline jigs up till mid to high 50s then it's crankbait time.