Originally Posted by dhayden
You shoudl try it.. then decide
I didn't say it wouldn't work. Of course it will, usually.
But when designing or trying out a new fly you need to think about "triggers".
Things that the fish see that identifies it as something that the fish will want to eat or on the other end, some unnatural quality that the fish sees that disqualifies your fly as a food.
Your fly doesn't need to be a perfect copy of the natural, but negative triggers may cause the fish to look elsewhere.
Why do that on purpose?