I am not a spearo (not really having the hunting spirit in me), though I do not exclude I'll try it once. I cannot tell I appreciate the "bravado" trophy photos of spearos showing themselves with happy smiles holding the beautiful fish they just killed (the bigger fish the bigger smile) as if they had no respect for the (once) living being they fought and killed. However, I have to admit I have much more respect for spearos who hunt the fish in relatively fair conditions, and usually killing it fast, than for the following technique of "hunting":
http://www.blumood.com/video/vari/trawl_action.wmv
http://www.blumood.com/video/vari/trawl_action.wmv
http://www.blumood.com/video/vari/trawl_action.wmv
http://www.blumood.com/video/vari/trawl_action.wmv