A tube jig looks like the picture attached. Use a 1/16oz jighead and a small or medium weighted cork. Adjust your depth as necessary I start out deep 2ft or so then move up. Phone won't let me post pics, try this link. http://www.google.com/m/search?site=images&source=mog&gl=us&client=ms-android-verizon&q=crappie%20tube%20jig#ii=16. Or go to google and search crappie tube jig and click on images.