What it is The Hareline Core C1730 is a stonefly nymph hook with a pronounced thorax curve bend that helps you build a bent, natural-looking nymph silhouette. It’s finished with a small barb and a sharp point, so it sticks well once you come tight. What to tie with it Use it for stonefly nymphs and any curved-thorax nymph where you want that hunched profile without forcing the materials to fake the bend. It’s a good hook for stacking a bulky thorax, then laying in a wingcase and wing pads cleanly over the curve. Flies and the fish they're for This hook is built for stonefly nymph patterns, which are staple bugs for trout in freestone rivers, especially when you’re fishing close to the bottom through riffles and pockets. The same bent-nymph shape also crosses over to curved-thorax nymphs you’d fish for trout in both rivers and tailwaters when you need a heavier, more realistic profile. How it compares There are few truly comparable models with the same bend, and the C1730’s unique bend profile is the whole point when you want a stonefly-style thorax curve instead of a straighter nymph shape.
