Regarding missing the brown trout with one hook.
Do you think you would have had just as many hook ups by reducing the front length of the fly? This could be done using a shorter Shank for the front.
That's a great question, though when I had the miss, it was a shank on the front that is shorter than the Hanak hook used in the video. It seems that there are lots of methods out there for articulated streamers, though this is the one I currently prefer. When talking to those who fish these articulated streamers on a regular basis, it's common to hear that not all of the fish are hooked; in my mind, this helps to slightly increase my chances (maybe?!?!) and I haven't seen the second hook causing damage to the fish. I also know that in various places, it's illegal to use two hooks, thus be sure to check the regulations before fly fishing.