I took a carp in a club match (coarsh fishing) last week before the whistle whilst plumbing up on the float. I assumed I must have foul hooked it but no, when it came in it was lip hooked fair and square. So no, I do not think larger, more aggressive or competive species are hookshy. Small silvers might be a difrrent matter with castrs you sometimes have to bury the hook completely to get a bite
With flyfishing remember theres less of the hook showing than with most coarse methods, whether just niked through a maggot or hair-rigged and the whole hook showing with the bait sitting touching the bend.
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Around the steel no tortur'd worm shall twine,
No blood of living insect stain my line;
Let me, less cruel, cast feather'd hook,
With pliant rod athwart the pebbled brook,
Silent along the mazy margin stray,
And with fur-wrought fly delude the prey
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