The present disclosure relates to systems and methods for balance index determination. For example, a wearable apparatus may have at least one gyroscope configured to measure angular velocity about a first axis; at least one inertial measurement device (IMU) configured to measure deviation along a second axis and a third axis; at least one memory storing instructions; and at least one processor configured to execute the instructions to: receive angular velocity measurements over a period of time from the at least one gyroscope; receive deviations from the second axis and from the third axis over the period of time from the at least one IMU; weight the deviations based on directions associated with the deviations; and generate a composite balance index based on the angular velocity measurements, the weighted deviations from the second axis, and the weighted deviations from the third axis.

An indicator assembly attachable to a butt end of a fishing rod includes a cylinder on which two information carrying rings are rotatable to selected positions. Each ring carries a plurality of information about the fishing line on that fishing rod. Each ring is rotatable on the cylinder to bring selected information to an indicator supported at the cylinder. A fastening element holds the elements of the assembly together.

Disclosed are grips and methods of making grips for use with the handle of an article, and in particular for use with fishing poles and golf clubs. Grips preferably include a multi-layered gripping member and an inner sleeve or mounting body. The gripping member can include an outer layer with a fabric layer coated and preferably saturated by polyurethane. The outer layer can be bonded to an inner layer to form the gripping member which is then attached to the sleeve. The sleeve can be ground from a starting block of material or may be injection molded. Also disclosed are handles including a connector configured to couple to a portion of a fishing pole. Such handles may include a multiple layers and can be selectively removed from the article. Methods are also provided for selectively coupling exchangeable handles to articles including fishing poles.

Disclosed are grips and methods of making grips for use with the handle of an article, and in particular for use with fishing poles and golf clubs. Grips preferably include a multi-layered gripping member and an inner sleeve or mounting body. The gripping member can include an outer layer with a fabric layer coated and preferably saturated by polyurethane. The outer layer can be bonded to an inner layer to form the gripping member which is then attached to the sleeve. The sleeve can be ground from a starting block of material or may be injection molded. Also disclosed are handles including a connector configured to couple to a portion of a fishing pole. Such handles may include a multiple layers and can be selectively removed from the article. Methods are also provided for selectively coupling exchangeable handles to articles including fishing poles.

An adjustable fishing rod butt includes a first elongate member hingeably attached to a second elongate member. The first elongate member includes an opening on a bottom surface thereof extending at least into an interior thereof, and an alignment locking member secured about the opening on the bottom surface thereof. The alignment locking member includes an opening coaxially aligned with the opening in the first elongate member. The second elongate member includes an adjustable reel seat portion on an upper surface, and an angle positioning arm extending from a bottom surface and oriented to be received by the openings in the first elongate member and the alignment locking member. A locking pin locks the angle positioning arm to provide the butt with a specific angular relationship.

An adjustable fishing rod butt includes a first elongate member hingeably attached to a second elongate member. The first elongate member includes an opening on a bottom surface thereof extending at least into an interior thereof, and an alignment locking member secured about the opening on the bottom surface thereof. The alignment locking member includes an opening coaxially aligned with the opening in the first elongate member. The second elongate member includes an adjustable reel seat portion on an upper surface, and an angle positioning arm extending from a bottom surface and oriented to be received by the openings in the first elongate member and the alignment locking member. A locking pin locks the angle positioning arm to provide the butt with a specific angular relationship.

A quick release, modular handle system for fishing rods includes a component stop and locking nut that permit removal and repair or replacement of handle components from a rod without cutting or gluing.

A quick release, modular handle system for fishing rods includes a component stop and locking nut that permit removal and repair or replacement of handle components from a rod without cutting or gluing.

A fishing pole where the handle of the pole is offset such that the fishing pole provides a better center of gravity for better balance and feel. The offset also improves alignment of the fishing line with the fishing pole eyelets, allowing for greater distance and better accuracy when casting. Various embodiments are specifically offset to match varying sizes and types of reels, such as spinning reels, bait casting reels, flyfishing reels, and a low profile reels

A fishing pole where the handle of the pole is offset such that the fishing pole provides a better center of gravity for better balance and feel. The offset also improves alignment of the fishing line with the fishing pole eyelets, allowing for greater distance and better accuracy when casting. Various embodiments are specifically offset to match varying sizes and types of reels, such as spinning reels, bait casting reels, flyfishing reels, and a low profile reels