I use 80 lb test fluorocarbon leader to attach the rear hook. This fly has two red beads on the leader material between the hooks. I usually add some sort of bead to the connection on all my articulated patterns. I've used wire instead of the fluorocarbon as well but the wire kinks easier. Lots of nail polish to hold the thread wrap on the fluorocarbon so I can't imagine it ever coming apart.

I'm going to do a yellow and red version as well as a lime-green and red version.

I've been tying "smaller" articlated flies for big trout and really like the way they look. Kelly Gallup has all kinds of neat patterns. I like the idea of using a giant articluated wolly buggertype things except that like with the musky flies, it is a endurance issue for casting.