Lake Onalaska, a vast backwater formed by the confluence of the Black and Mississippi rivers, sports abundant weed beds that hold fine bluegills, crappies and pike in winter.Prospect for bluegills on the edges of weed beds in two to nine feet of water using light line tied to a Rat Finkie jig tipped with a wax worm. Look for crappies in deeper holes and near Black Deer Creek. Jig with a Swedish Pimple or Ratso and a large, crushed waxie. Rig a tip-up with 30-pound braided mono and a hook baited with a four-inch shiner for pike cruising weed lines for an easy meal.Contact: Wisconsin Department of Natural Resources (608-785-9009).