I don't believe anybody thinks that circle hooks lead to anything but fewer gut hooks. But there are at least a couple things wrong with this study. First, the 4% gut hooking stat for Snelled Circles does not match the data, it should be 6% if the other numbers are correct. Second, the catch rate for unattended circle hooks is obviously going to be greater than a hook not designed to trap the appendage hooked. If there were fishermen on the ends of those lines keeping pressure on the fish, i believe the catch rates would be much more similar. A better interpretation of that data might be that the circle hooks are much more "set it and forget it".
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