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I have not used it for hot smoking in my Smoke Vault, but I would think on a rack above the water pan would be where I would put it. I think the Vault & GOSM are very similar inside. What ever you decide I'm very interested in the outcome.
Notice the "Heat Shield"? Fire it attracted to fire, so without the heat shield, the pellets want to burn up very quickly. This heat shield is a small rack covered in foil.