Upcycled metal caps as fishing lures may appear as redneck as it gets, but the science behind why they work may get you making them too.

1. Colors. The light that humans see is just a small part of the total electromagnetic radiation that is received from the sun. We see what is called the visible spectrum. The actual colors within the visible spectrum are determined by the wavelengths of the light: the longer wavelengths are red and orange; the shorter wavelengths are green, blue, and violet. Most land animals are considered to be color blind; they see mostly patterns. Most fish, however, can see colors that we do not, including ultraviolet. A colorful variety of lure caps could improve your fishing odds.

2. Sound. It travels almost five times faster and much better in water than it does in air. The ocean is actually a very noisy place. Fish capitalize on this by having an excellent sense of hearing, using both their inner ears and lateral lines to detect prey or avoid enemies. The creased metal caps will be a hard noise to miss, as opposed to most streamlined lures.

3. Vibration. It’s how fish read the water signs to determine food, enemies, and environmental changes. Again, the creased metal caps are more likely to vibrate than most streamlined lures.

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