Line size depends upon the size of fish in a given lake, the amount of cover you're fishing and the clarity of the water. The lighter the line, the more natural the bait will appear in clear water. No other bait will deliver more strikes under nearly every fishing situation. However, there are times when color, style and size can make as much of a difference as the way you fish it. Straight-tail worms are best in clear water or when bass are fussy and want a slower presentation.
Smaller worms are best for cold front conditions or in lakes dominated by small bass.
After the initial cast, simply lift the rod tip and let the bait flutter to the bottom. The split-shot rig, with a small sinker mashed to the line a foot or so above the worm, is ideal for working over shallow flats with limited cover or when bass prefer a more subtle presentation. Fish it on light line and swim or twitch the bait over the flat. When - Spring through fall when water temperature is above 55 degrees. Early morning and evening hours tend to be best.