Re: Tom Thumb
That's what I use it for in smaller sizes, but I also believe it would work as a Caddis Emerger in larger sizes and colors. As with most good flies, "it represents nothing inparticular, and yet represents everything".
"I've never missed a Steelhead by waiting too long. It's true, but I've missed plenty trying to set the hook too quickly." Dec Hogan 'A Passion For Steelhead'