here is a decent example...

WP_20131109_10_57_27_Pro.jpg
this is one of the better ones, as in less bulk... i should have wrapped a little lower in my opinion to pull the tail in tighter....
i used this...
WP_20131110_09_10_48_Pro.jpg
they must have had a problem with labeling that day lol.. i bought it some time ago, for tying 16-18 parachute sulfurs...
i made the mistake of thinking thicker was better, figured that's gonna be chewed on a bit, tried using 8/0... needless to say, a bit bulky...


as for using a tube, that's not a bad idea, wrapping with 1 barb is enough of a pain, let alone 3... but how would you get the tube to sit taught on the shaft? I've never messed with tube flies, a thread damn perhaps?