'Kid,

I know a few bassers that use this system, but mainly for topwater...you can build bodies and tails on tubes, then mix/match them.

I tried it on some streamer/subsurface patterns some years back...didn't particularly like it....I prefer my hooks to be closer to the head on bass flies and I thought that the action wasn't as controllable.

You might like it, though, so give it a shot.

Buddy