I have heard a lot of people talking about how you have to burp fish that you catch from deep water if you plan on releasing them. When we went out with a guide he showed us how he does it, he sticks this pipe thing down the fishes throat and it pops something, or pushes it down, and the fish swims off. When my dad got his 40lber Sunday, the fish was doing bad until we did what the guide showed us, then the fish swam off fine. I just don't really understand what exactly the pipe down the throat does to them? How do you all do it?