While it is true crappie like wood. They also ambush their food and in a river situation they will sit just outside the current and wait for food to float on by. You need to find the spot the has cover just ont he edge of the current, preferable next to the main channel. Keep trying. While you may not be catching fish, your learning what isn't working. There is no substitute for spending time on the water.
HOI Crappie Club
Where family and friends come to compete for a little more than bragging rights.
Quick, someone teach me how to fish so I can win this tournament!!!