I use a float even in the shallows, take a 5m tuna bungee as float line and you can get down to 7-8m easily with the stretch and also you can shoot fish when it runs into deeper water it just stretches the rope out. This way you have a place to keep your fish and your safe when your gun gets stuck, just let go and go get it when your ready

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Dive safe and shoot straight
- Hénré -
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"Thinking is the hardest work there is, which is probably why so few engage in it"
- Henry Ford -