I read a story on a guy that does commercial spearing, and went out with some mates to the rigs. He spoke about improving skill etc over gear.
Having the right gear is important - you don't cave-hunt with a 60" Riffe pole, or go after 300# Tuna with a polespear. Having the right kit for the job is part of skill, though - knowing what to expect in what conditions etc.
This guy (damned if I can remember who or where or even when) talked about stoning fish - a major plus point for most spearo's I know. They all like to make a quick kill (apart from some SA guys who seem to like a fight
) - so why not do some research into where the sweet spots are?
As he explained it, the best shot is at an angle of about 60 degrees to the fish, going in at the lateral line behind the gills. This gives you a bigger chance to get a shot through the spine, as well as more damage to the spine once hit. (By going in at 90 degrees with a 7mm spear, you take out 7mm of spine. At 60 degrees you take out at least 14mm of spine)
Also, he was 'spooking' the fish to get them to turn into the perfect shot profile - slightly behind, at the aforementioned angle. Now THIS is what being a true hunter is all about - getting to know the game, your equipment, your limits, as well as your prey's behaviour. Making a quick kill can mean the difference between getting your fish and getting all the fish.
Mmmmmm .....