Use the correct size and color to match conditions. Use bold colors. Use permanent markers or dye markers to change colors of bodies or tails. Make sure your jig is hanging horizontally. Use scent attractants. Examples: Berkley crappie nibbles, Gulp Alive maggots, or Kodiak Minnow paste. Above all don't waste time fishing where crappie are not. Choose your locations carefully. Don't be afraid to experiment when crappie have closed mouths. Change colors, sizes often. They will show you what they want. Don't get discouraged. They are going to feed. Feel free to add any Tweaks that you have tried and proved.