I think the BBQ method is not that great, they tend to leak and you use a TON of wood. The Texas guys use BBQ types and but they smoke/cook whole pigs. If you want to smoke a few fillets get a small smoker just for doing that. ...I prefer smokers like this.
http://www.cabelas.com/cabelas/en/co...left-nav.jhtml
As far as the recipies...I found this general thing on the web that might help you:
http://www.3men.com/threemen1.htm
And I have seen "cook books" in the stores for smoking fish and meats (ribs, turkey chicken are great too). I would start by getting a inexpensive smoker instead of making one...learn how to do it and then get a good machine dedicaded for smoking.
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