Also known as:浮标 · 吃铅量 · 漂型
A float's lead capacity sets casting stability and sink speed; its shape shapes the signal.

Small floats for still, shallow, finicky water; large ones for wind, current and depth. Too little drifts, too much dulls feedback.
About 1–2 g for 3.6 m still-water crucian, 2–4 g for 5.4 m or current, adjusted for depth and line.
Long bodies sink and settle fast for bottom and current; short bodies exaggerate signals for light bites. Start with one general-purpose float.

A balanced suspended-lead float method with high sensitivity — the mainstay for still and slow water.

The classic float-tuning baseline: four marks bare-hooked, fishing two with bait.

Moving water that drags the rig and float away from the swim.