011. Sitting Directly on Underwater Rocks

Placing your body directly on the rock obstructs water flow, making it difficult for fish to approach. Water flow is a key cue for fish feeding searches, and studies show that when a rock blocks the flow, intake drops by 30–40%.

Especially in coastal zones where currents are 0.5–1.0 m/s, flow forms around the rocks and fish inhabit those areas. If your body blocks it, the flow twists and fish evade.

The solution is to sit behind the rock or keep your rod and body at least 1 m away from the rock. This preserves the natural flow while allowing safe fishing.

022. Letting the Rod and Reel Hit the Rock

When the rod strikes a rock, the impact can damage the carbon composite below its 24‑ton elasticity limit. Damaged composite reduces sensitivity and shortens casting distance.

Especially when using a lightweight reel under 1 kg, low shock absorption means a deformation of about 0.2 g can reduce casting accuracy by 5–10%.

To avoid collisions with rocks, place a rubber pad or soft cloth when securing the reel, and set the rod at least 30 cm away from the rock.

033. Indiscriminate Casting That Encroaches on Fish Habitat

Rocky shore areas typically have depths of 3–8 m and water temperatures of 12–18 °C, habitats where small fish and crustaceans concentrate. Indiscriminate casting disturbs their habitat and hinders feeding activity.

Research shows that casting more than 10 times in the same area increases fish avoidance responses by 60%. This drives fish away from the habitat and can lead to long‑term declines in catch rates.

Optimal casting targets the intended point within 2–3 m with precision, and using a smaller reel can adjust casting distance when needed.

Key Depths
3–8 m
Key Temperatures
12–18 °C
Typical Water Flow
Small Fish & Crustaceans

044. Ignoring Nearby Anglers and Creating Noise

Marine biology studies indicate that speaking loudly on the rock or banging equipment reduces fish auditory sensitivity by about 0.1 dB. Fish are sensitive to subtle vibrations, and excessive noise causes them to abandon feeding searches.

Especially on calm days with light wind and wave heights under 0.5 m, noise has a greater impact. Beginners should act quietly at these times to minimize fish reactions.

During fishing, handle equipment gently, keep conversation in a low tone, and use hand signals when communication is needed.

⚠ Common Mistakes
  1. Sitting Directly on the Rock – Blocking Water Flow
  2. Reel Hits the Rock – Composite Damage
  3. Indiscriminate Casting – Habitat Disturbance
  4. Excessive Noise – Fish Avoidance
Mid Zone
Between Rock and Water
4–6m
Always
Outer Zone
Rock‑Surrounding Surface
2–4m
Always
Deep Zone
Depth Behind the Rock
6–8m
Always
⏱ Fishing Etiquette Timeline
10 Minutes Before Start
Site Inspection·Rock Safety Check
Immediately After Casting Start
Quietly Arrange Gear·Minimize Noise
1 hour elapsed
Make eye contact and check manners with nearby anglers
‘Rocks are fishing spots created by nature, but they can be destroyed without human‑made manners.’ – Marine Fisheries Research Institute