A removable trigger mechanism for a spring-biased hook assembly includes a generally U-shaped swivel attachment portion having first and second spaced apart resilient surfaces cooperating to frictionally engage a first biasing element of the hook assembly. A hook-setting finger is formed adjacent the first resilient surface of the swivel attachment portion, and is adapted for temporarily holding a second biasing element of the hook assembly when in a loaded condition. An actuation lever is formed adjacent the second resilient surface of the swivel attachment portion, and is adapted for pivoting the attachment portion relative to the first biasing element of the hook assembly. When pivoted, the actuation lever simultaneously moves the hook-setting finger away from the second biasing element of the hook assembly in the loaded condition, such that the hook assembly is released for sudden movement from the loaded condition to an outwardly-flared deployed condition.
