What all will I need to succesfully spearfish in freshwater? Where is the best place to get good used gear? I am 6' 270lbs and pretty sturdy built, how much weight will I need, size suit? How many tanks? I can only afford the bare essentials for now, but give me the works also. What would be a good gun for panfish, bass, catfish? Do I need a camo suit? Is there a quality affordable underwater camera? Thanks