In brief, the patent discusses the attachment of the grapples to the quillon with sufficient strength to support a load of 600 pounds and reference is made to a casting line. With this said, it is generally accepted that using the knife as a grappling hook, which implies the act of tying a rope to the pommel and throwing the knife, could be very hazardous! In fact, the last of the BUCKMASTER knives came with small flyers saying that using the knife as a grappling hook would void the warranty. A better use of these hooks are as anchor pins where knife can be wedged in some rocks or the crotch of a tree and used with a securing line off the lanyard loop attached to the hollow handle cap/pommel.