Competitiveness in spearfishing can be a touchy subject but I think it's worth discussing. I'll state my opinion right from the start; I don't think competitiveness and spearfishing go well together. I think at worst competitiveness is dangerous and can lead to bad risk taking, at the least it can spoil a nice day on the water. I believe I can make this call because I have different kinds of diving to compare between. When I started spearfishing I was doing it alone and for a long time after too. I was completely free of competitiveness and the only thing that made me challenge myself was the environment in which I found myself. This means that if I tried to go deeper and longer it was because the circumstances demanded it not because I felt arbitrarily that I should be able to do it. While the two can appear the same in the end leading to the same thing, deeper and longer, I find that being influenced from the outside is much more draining. It's like doing something for the wrong reasons.
Coming to the US spearfishing became more of a social activity for me and inevitably brought competitiveness with other divers which I was naive about. It is something that I still have to deal with when I find myself in the company of competitive individuals. But worse than that it is something that I began to carry along even when I'm by myself. A part of the mental conditioning I do is to push that away back to wherever it came from and dive with a clear head. For this reason I prefer to dive with companions who are not outwardly competitive to the point that it throws off my day. A desire to do better born of camaraderie, difficult to explain, does not have the same negative effect.
I realize that these thoughts go completely against something as common as spearfishing tournaments so I expect a difference of opinion and welcome it. I just want to state my preference so as to be more open about myself and allow others who have the same ideas to relate to me. Very importantly when I think how competitiveness affected me, and I consider myself an experienced diver, I worry about how it affects beginners who have no other perspective and think that it's the norm.
Here's a little vid that I find ridiculous and think is pertinent in a round about way http://www.youtube.com/watch?v=qLe81lUbPNg