submitted by ling killer on Ifish. Place halibut in a smoker for 45 minutes to an hour and 15 minutes, then take it out and set it on a tin foil tray with lots of butter. Lightly salt 'n pepper the fish, then place it onto a barbecue rack to finish cooking through.You should have about 1/2 lb to 1 lb of morels sliced longways.ubmitted by ling killer on Ifish. Place halibut in a smoker for 45 minutes to an hour and 15 minutes, then take it out and set it on a tin foil tray with lots of butter. Lightly salt 'n pepper the fish, then place it onto a barbecue rack to finish cooking through.