A fly fishing float and/or strike indicator is attached by an interference fit to a leader, by sliding the float up the leader to a thicker-diameter portion of the leader for a tight fit, and preferably a leader-compressing fit, between the leader and an axial bore in the float. A bore surface, that is non-compressible and/or less compressible than the leader, may be supplied as an insert around which a buoyant main body of the float is formed. The insert may also have features that prevent separation of the main body from the insert and that help transmit force on the main body to the bore surface for quick and efficient securement of the float to the leader by the interference fit.

A process for producing a tapered multifilament yarn comprising feeding a drawable filament to a drawing apparatus and changing the take-over speed relative to the feed speed of the filament in order to change the thickness of the filament in a longitudinal direction, characterized by making the take-over speed slower than the feed speed under heating in a part of the filament in the longitudinal direction and thereby shrinking and thickening the part of the filament. According to the process, the ratio of the thickness of the thickest part of the tapered multifilament yarn to the thickness of the thinnest part thereof can be easily increased.

A process for producing a tapered multifilament yarn comprising feeding a drawable filament to a drawing apparatus and changing the take-over speed relative to the feed speed of the filament in order to change the thickness of the filament in a longitudinal direction, characterized by making the take-over speed slower than the feed speed under heating in a part of the filament in the longitudinal direction and thereby shrinking and thickening the part of the filament. According to the process, the ratio of the thickness of the thickest part of the tapered multifilament yarn to the thickness of the thinnest part thereof can be easily increased.

A fly fishing float and/or strike indicator is attached by an interference fit to a leader, by sliding the float up the leader to a thicker-diameter portion of the leader for a tight fit, and preferably a leader-compressing fit, between the leader and an axial bore in the float. A bore surface, that is non-compressible and/or less compressible than the leader, may be supplied as an insert around which a buoyant main body of the float is formed. The insert may also have features that prevent separation of the main body from the insert and that help transmit force on the main body to the bore surface for quick and efficient securement of the float to the leader by the interference fit.

A fly fishing float and/or strike indicator is attached by an interference fit to a leader, by sliding the float up the leader to a thicker-diameter portion of the leader for a tight fit, and preferably a leader-compressing fit, between the leader and an axial bore in the float. A bore surface, that is non-compressible and/or less compressible than the leader, may be supplied as an insert around which a buoyant main body of the float is formed. The insert may also have features that prevent separation of the main body from the insert and that help transmit force on the main body to the bore surface for quick and efficient securement of the float to the leader by the interference fit.