The marker lead makes it easier for the angler to carry out one of the most important tasks during shore fishing: it conveys accurate information about the variety of bed conditions. For field reconnaissance, let the lead sink to the bottom after throwing it out, then pull it in slowly. Through the formation of the lead, it provides accurate information about the bed conditions, the texture and hardness of the soil, etc. With a little practice, we can distinguish the loosely structured mud from the hard sandy or clay bottom, as well as the gravel substrate from the characteristic knocks.