16 Flexible Ribs Draw Bass In with Powerful Water Displacement While Keeping Them Guessing
1. Sixteen Flexible Ribs Generate Powerful Water Displacement to Draw Bass In from a Distance
The BeastBone’s most distinctive feature is its unique structure of 16 flexible ribs that open and close as they catch the water, causing the entire body to flex and generate powerful water displacement.
Each rib is equipped with a micro paddle tail that works in sync with the rib’s movement to create complex water currents. This design allows the entire body to flex dramatically while maintaining its vertically oriented bluegill profile.
With this design, Katsutaka Imae: C.E.O of IMAKATSU aimed to create a different approach to attracting bass. Rather than simply presenting a lure directly in front of a fish, the BeastBone is designed to make bass detect its presence through strong water displacement and actively move toward the bait on their own.
2. Different Profiles from Different Angles Make It Harder for Bass to Identify the Bait
Viewed from the side, the BeastBone resembles a bluegill or crucian carp. From above, however, its unique shape takes on the appearance of a shrimp or other crustacean.
Numerous fine, hair-like appendages along the sides of the body, combined with micro paddle tails, produce constant subtle movement underwater, making the bait's outline harder to define. Creating this three-dimensional, constantly changing silhouette was one of Imae's key priorities during development.
Even if powerful water displacement draws bass toward a lure, it won't necessarily produce a bite if the fish gets close enough to recognize it as an artificial bait. By combining a profile that suggests different types of prey depending on the viewing angle with complex movements that blur its outline, the BeastBone is designed to make it harder for approaching bass to identify and reject the bait.
3. Fine Side Appendages and Micro Paddle Tails Create Lifelike Bluegill Movement with Minimal Forward Travel
Unlike conventional bluegill-style lures, the BeastBone was developed to imitate not only a swimming bluegill but also one holding in place while continuously moving its fins.
Micro paddle tails attached to its 16 ribs, fine side appendages, and a specially shaped tail that responds even at very low speeds all react to the slightest water movement or rod input. As a result, multiple parts of the bait continue to produce subtle movements without requiring the lure to swim through the water.
This is particularly effective for jig-strolling, where the angler maintains a semi-slack line and uses minimal rod movement to generate complex, lifelike action.
The result is a bait that can remain in a specific strike zone or depth range for an extended period while continuing to attract attention. This makes the BeastBone a promising option for bass that are reluctant to chase faster-moving lures or fish that follow a bait but hesitate to commit.
4. Belly-Loaded Salt and a Tail Counterweight Prevent Unnatural Posture That Can Cause Bass to Turn Away
Highly buoyant elastomer responds exceptionally well to subtle movements, but its buoyancy can also cause the bait to assume an unnatural, head-down posture when rigged without proper weight adjustment.
Through extensive field testing, Imae recognized that this unnatural posture could be one of the reasons bass identify and reject a lure. To address the issue, he incorporated a carefully designed weight distribution system into the BeastBone.
Salt is concentrated in the lower portion of the body, while a 0.9 g (approximately 1/32 oz) nail weight is inserted into the dedicated hole at the rear of the tail. Together, these weights are designed to keep the bait nearly horizontal while swimming and allow it to maintain a natural angle of approximately 30 degrees when paused.
This weight distribution also serves another important purpose. The nail weight in the tail acts as a counterweight, increasing the body's flexing motion in response to rod input and helping the 16 ribs open and close as they catch the water.
In other words, proper weight adjustment does much more than correct the bait's posture. It is essential for bringing out the BeastBone's intended water displacement and action while reducing unnatural movements that could cause wary bass to turn away.
5. Recommended Rigging and Techniques to Get the Most Out of the BeastBone
Imae's recommended basic setup uses a 5–7 g (approximately 3/16–1/4 oz) football jighead with an exposed hook, rigging the BeastBone in a vertical orientation.
The side marked "F," which contains the concentrated salt, should face downward. A 0.9 g (approximately 1/32 oz) nail weight should be inserted into the dedicated hole at the rear of the tail. Applying a small amount of super glue is recommended to prevent the nail weight from coming loose. For anglers who want to fine-tune the bait to maintain a more horizontal posture, the manufacturer also suggests adding two 0.45 g (approximately 1/64 oz) weights, one to each of two belly ribs.
When rigged vertically, the body flexes more freely than when rigged horizontally, allowing anglers to take full advantage of the powerful water displacement generated by the 16 ribs. This setup is particularly effective for mid-strolling and slow swimming presentations through the middle of the water column.
The BeastBone can also be used on heavy drop-shot rigs, free rigs, and as a jig trailer, offering a wide range of presentations from the bottom to mid-depths. However, conventional offset hooks may encounter hooking difficulties due to the elastomer's elasticity and the bait's rib structure. Careful hook selection and proper hook-point positioning are therefore important for achieving reliable hooksets.
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