I'm not sure how much it matters in practice, but the drag coefficient of a smiling bill is probably in the 2-2.3 range and the drag coefficient of a bullet jig is probably in the 0.4-0.5 range. How much wiggle that translates into would depend on a bunch of stuff, but it seems plausible that it could make a difference, particularly with pork or rubber on it. I am not convinced it makes a difference as far as relative effectiveness, but there is a difference in drag coefficient. Just maybe it was more important than Paul's confidence, but we will never know.
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