Greg, I think that Dave is exactly right-a secondary smoke generator is really helpful. I use a Smoke Daddy externally mounted to the SI and essentially use the SI as an insulated box for really cold smoking. The smoke quality from the SD is arguably slightly less good than that from the SI but is genuine tbs and works fine. It also solves the problem of internal smoke generators which are tough to keep lit given how air tight the SI units are. See my post "Cold Smoking in a Hot Climate" (sorry, have not figured out links)