Lightning Fish:Thanks. Also from http://www.tcpalm.com/tcp/cda/article_print/0,1983,TCP_1062_3838306_ARTICLE-DETAIL-PRINT,00.html
"Without a powerhead, the only way to prevent a struggle is to hit the fish directly behind the gills. That kills it or paralyzes it. About one in four shots is a kill-shot. Other shots stick in the fish but do not kill it."
Bill.
I wouldn't use this article as much of an authority on spearfishing. It uses the term "angler" repeatedly, which is not synonymous with all fisherman, but rather the ones that uses bait and a hook. (The editors at the St Pete Times just made that same mistake in my column last week.)
Stone or paralyzing shots can be far back on the spine as well, or even from an angle in front of the fish, although much more rare.
Frequency of spinal or lateral line "stone" shots can be much higher or lower depending on so many factors... experience, range, shaft speed, prey type and wariness.
Powerheads often do not kill a fish, if not shot in the right spot. They can and do fail to fire frequently, and weight or slow a shot by a large amount.
I'd highly recommend heading over to www.spearboard.com for the straight skinny on this trophy, from Head Hunter and his team.
Chad
Dan (HH) got grabbed by the knee by a 500 lbs Goliath last year, during a cobia hunt on a deep spring. After getting shaken like a rag by a dog he loaded a Russian PH and blew it to Hell! (www.sptimes.com and archive search for Dan MacMahon.)