Low Rider Emerging Nymph
I measured literally hundreds of insects while doing the research for the Borger Color System (BCS), and in so doing, I realized that basically all insects are thinner than the flies tied to match them. Interestingly, this seems to have little effect of high floating flies, where emphasis of the body seems to enhance the fly's effectiveness, probably because it's a bit easier for the fish to see. Using a bulky body on a searching pattern has the obvious advantage of making it easier to see--and perhaps a bit more like a juicy terrestrial or just a juicy "something" that might be edible. Having a slightly bulky body works in deeply fished nymphs, too, probably because the extra size can suggest gills or a bit of motion. Bulkier flies might just be like oversized goose decoys, they're really too big, but they're easy to see and perhaps they just look better than the real thing…It was this need for the correct film profile that was the impetus behind Jason's Low Rider Emerging Nymph, a fly that we both use heavily when fishing various mayfly hatches.