Lurelip — Fishing lure lips (crankbait bills) | lurelip.com
Practical inspection of square, rounded and long-tapered bills, how each meets cover, and what the published ratings say across six models.
The outline of a bill tells you two things you can check on the lure itself: how much face it presents to the water, and how it will meet cover. A square bill has a blunt leading edge that presents a wide face; it is designed to bounce off wood and rock rather than slide past them.
A rounded or long-tapered bill carries more length and a smooth curve. More length means more face presented to the water at the same pull speed, which supports the deeper published ratings on long-billed models.
| Bill outline | What you observe on the lure | How it meets cover | Inspection limit |
|---|---|---|---|
| Square | Blunt leading edge, wide flat face | Bounces off wood and rock | Look for chips, cracks and warp on the blunt edge |
| Rounded | Smooth full curve, longer face | Slides past cover more easily | Check the curve for cracks and any warp along the length |
| Long-tapered | Extended length, narrow taper | Presents the most face to the water | Inspect the tapered tip for chips that change tracking |
| Coffin | Angled face between round and square outlines | Between bounce and slide | Inspect the angled face for cracks and warp |
| Any damaged bill | Chips, cracks or visible warp | Runs differently than the original outline | Damage changes tracking and depth in ways an eyelet bend will not fix |
On narrow screens, swipe or scroll the plate sideways.
Inspect the bill for chips, cracks and warp. A damaged bill changes tracking and depth in ways an eyelet bend will not correct. Do not assume all circuit-board bills wobble tighter or faster than polycarbonate — that comparison is specific to models, not a rule for the material class.
Rapala's DT series uses balsa bodies with thin polycarbonate bills. The OG Slim has a thin circuit-board lip.
Published ratings across the six DT models run from 4 ft to 16 ft. These are the manufacturer's comparison figures for specific models; they are not a model-independent rule that shape predicts metres. Read a bill's shape as a guide to how it will meet cover, and read the model's rating for depth.
Further reading