Fishdreamer, you asked about twisted leaders for trout and bream. I've made furled leaders on jigs for several years, and began doing the hand twisted ones Captain Phillips has demonstrated. Most of my jig furled leaders were made from .004 nylon (quilting thread) with the weight being controlled by the number of strands used. On the hand twisted, I've used nylon mono from 6 lbs to 10 lbs. Most of my trout fishing is on the Lower Mountain Fork River in Oklahoma and in most cases I want the fly to get down deep. I've found a hand twisted leader from 12 lb flurocarbon works very well on my four weight rod. I attach a 4 lb flurocarbon tippet giving me a total leader-tippet length of about 7 feet. Using this setup, my best fish has been a 21 inch rainbow on my last trip to Oklahoma. I don't get into a lot of the technical aspects of leader construction, as I probably should do, but I don't think the fish worry too much about my humble offerings. Hope this helps.