After a bunch of failures it finally got through my skull that poly yarn (specific gravity ~0.9) is insufficiently buoyant to float steel, even little hooks. Tiemco aero dry wing is a hollow poly fiber with a specific gravity of 0.6, but even that isn’t really sufficient unless used in volume (and it’s pricey).nice poly yarn furled body - and poly yarn floofy wing - sinks like a stone 😅 specific gravity properties are all wrong - pretty fly otherwise - with a permanent position in the “experimental” box