Flybug,
How does Z-lon differ from antron or any of the other synthetics? I’ve noticed that it is considerably more expensive.
I don’t know that I can say there is anything that has changed my fly tying. One product I like a lot, but only use it for warm water and salt water applications, is sof-tex. I think it imparts some bite appeal to those types of flies.
A couple of things that have been a complete bust, in relation to all the hype, are Marc Petijean’s Magic Tool and siliskin (or whatever it is called that is used for gummy minnows). The Magic Tool is a more expensive dubbing loop tool. As for the siliskin–it’s easier to get gum out of toddler hair than to work with that stuff.
Splitshot