Love the Bradley Smoker. I'm on my second version (I wore out the 1st, Bradley Original, and have gone to the 4 Rack Digital). Before the Bradleys, I used an offset barrel smoker. The one downside of the Bradleys is the dimensions of the smoking chamber. Smoking a whole Whitefish was/is one of my specialties. A whole Whitefish (24"+) just doesn't fit onto the Bradley racks (15" x 11"). The presentation for holidays and parties was always a hit. Here is my solution.
Brine and dry as usual (I use red wine instead of sugar)
While brining, bend some 12 gage wire (sturdy coat hanger wire) into an elongated "S" hook
When the fish is dry, run the "S" hook through the mouth.
Anchor the bottom hook (larger end) into the backbone of the fish. This will support the weight of the fish during the entire smoking duration. I've read several posts where the individuals attempted to hang the fish from the tails..which always seem to pull off during smoking.
Remove the horizontal racks and hang the fish from the variable Damper at the top of the smoker.
When hanging from the Damper (in the wide open position), the "S" hook renders the Damper inoperable. I solve that by using terracotta feet (used for pots). These can be manually adjusted for any flow rate.
Smoke as usual.
When the fish is smoked to the desired doneness, unhook from the Damper and prepare for the presentation.
Remove "S" hook.
Finished product! I usually surround with a bed of parsley.