Hey Doug great read mate, I'm not much of a spearfisherman myself but was recently on a holiday at Ascension Island where I met some hard core blokes. They were from London spearfishing club, we became friends after the 10 days there & I managed a trip out with them in there boat. It was a real eye opener watching & listening to what they talked about & techneques that they used on certain fish. One of the guys Paolo, speared a world record Big Eye Tuna during our stay in the same spot a massive Tiger shark ate a 30kg yellow fin. My hat is off to you blokes & that crazy sport, I think I'll stay inside the boat!
It was a fantastic destination to visit & I'm sure you will be reading more about it soon as its fast becomming a red hot destination for Europe.
Cheers
Toppy