Spear fishing is something that has always interested me, but something that I never looked into. So I thought I would ask a few questions about it. #1 Is spear fishing an effective way of harvesting fish? #2 How do you spear fish? #3 How do you make a spear to fish with? It doesn't seem that hard and it seems like all you need is a knife to construct one, given that you find the right piece of wood. Thanks for your help!