Fishing line's a "second best" choice, at best. You want to use a metal wire (if at all possible) to avoid your catch chewing/clawing/breaking out of the snare. Before Primitives using field spun cordage is brought up, yes, something is better than nothing, but if we're talking survival, I want to improve my odds as much as possible, but that's why my B.O.B. includes a dozen 110 Conibears (for those that don't know, a Conibear is an extremely effective body-grip animal trap).

Troy