1. Pull down a floating body, trim the lead skin, and expose the hook after four eyes. About 25 cm from the bottom, equivalent to more than ten eyes. According to this theory, my personal understanding is that no matter how you tune it, there will be no bait in four eyes, and the tuning is much larger than that in two eyes.
2. The length of the pull-down sub-line is 5cm, and the lead skin is trimmed. After the four eyes are exposed, the basic hook is about 5cm away from the bottom. At this time, the earthworm was hung on the double hook, and the ditch sank. After one eye, it is still about two eyes off the ground or does not touch the bottom. Commercial bait and feed bait will not appear this kind of situation, that is to say, the two kinds of bait are relatively large and heavy, and the double hook can generally sink a few eyes.