A catfish clonk is a specialist tool used to create a distinctive underwater sound that can trigger the curiosity and hunting response of catfish. It is a proven method for anglers fishing from a boat or belly boat on rivers, lakes and large waters.
How does a clonk work?
A clonk creates pressure waves and a popping sound under the surface. Catfish can detect these vibrations and may rise from deeper water to investigate. The technique takes practice, but the right rhythm and sound can make a major difference, especially when combined with sonar or visual feedback.
Choosing the right clonk
Shorter clonks are practical when fishing low to the water from a belly boat, while longer models can be easier from a higher boat. Smaller heads create a sharper sound, while larger rounded heads produce deeper pressure waves for bigger or more turbid water.