Yeah thats interesting data, i tried but couldn't bring myself to using the snell knot. I find the knot comes loose with no tension and i don't like the nylon wrapped around the shank.( & from past experience ) As i said i keep my knot protected in the lumo. But the circle hook i'm sold on as you get less gut hook ups and the circle hook seems to produce less dropped hook ups when bring the fish in. The circle for sure will feature in my all purpose trace for the bait hook - size, colour & brand i'll have to test.