Same here. I got a TFO kit from cabelas over the summer. $16 but I would say it could make about 50 or more indicators. Plenty of white and orange wool in the kit but tubing will be the first thing I need. Float well and cast nicer than foam indicators. I've only used them for small stuff though.
When I first saw this last year I made my own version. I works great with either the wool, foam strips or poly yarn. The tubes I use are cut from the ink tube from a ball point pen.
Not really, not any more than a Thingambobber. After you insert the wool you pull tight which pretty much straightens the leader. The indicator is held in place by compression.
Bringing this thread back up rather than start a new one... question, for those of you that use this system. What do you do when you remove the indicator? This seems like the only drawback that I can find. Is there an easy way to remove it and save it for later or do you just discard the wool?