So, after much lurking, searching and reading, I figured I would sign up. I have learned a lot from these forums already without being visible, so I thought I would become a bit more active.
I have only done about 4 or 5 batches of fish in the smoker so far, but plan to do a lot more. I have done salmon (some good Atlantic, and some cheap stuff), fresh brook trout, steelhead, and lots of mackerel. Definite learning curve, but I am getting there - and even the mistakes are pretty friggin delicious :) I have 4 large bags of mackerel fillets in the freezer right now, so another session is in my immediate future.
I use a very simple charcoal smoker - basically a metal box with some racks and a fire in the bottom. I don't have cold-smoking capacity yet, but will get there eventually. I tried making my own version of an AMNPS but it didn't work out to well - though it does do well as a chip holder to keep the smoke manageable. The shipping cost to Canada for a real AMNPS is too expensive at the moment, but I may get one at some point. They definitely look like a great solution.
That's about it. Looking forward to posting a few pics of my smoking adventures.