GXdoyle
I speared a 5 lb yes 5 lb !!Mullet and it was able to tow me around for a minute or 2 and I am 210lbs, you are going to spear a fish noted for it's toughness that weighs appoximately 10 times as much!!
I would be very careful and if possible start with smaller fish maybe small jacks or something like that.
If you decide to go ahead and shoot a big Cobia you would be well advised to use a reel that is strong enough, and that has a large enough capacity, and try to stone the fish, I reckon without a reel you will probably lose your gun and fish.
Good luck and let us know how you get on.
Huan
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