Hey toad the theory behind circles is that you don't strike the fish. They are almost exclusively used for fishing baits. They were invented by Japanese longliners.
You let the fish scoff down the bait, then flip over the bail arm or engage the gears, but you don't lift the rod and strike hard. You wait for the line to come tight, and the hook, because of the bent in point, doesn't find a hook hold in throat or gut or where-ever, and slides to the corner of the jaw. As the tight line draws the hook past the corner of the jaw that weird bent in hook point finds a hold. You then give a solid strike with the rod, but only then. Best, most solid hook sets, which rarely if ever come out. They do work with flies because there's no lure weight, but on lures can be hard to get that pause as the hook slides into the corner of the jaw.
Tell ya though your lure would kill our Murray Cod (freshwater fish, grow to 100 pounds plus, eat ducks for breakfast) in our outback rivers!!!!