I did it a few times before i had a heat gun. Again, its, very similar to the other methods. Figure out a way to suspend the bow above the flame ( 3~5 inches with your flame on LOW, as low as you can make it) this could be your arm, or if you get tired, some blocks of wood, etc. Figure out a way to monitor the progress. I sat on the floor right beside the stove and read a book. Just need to look up to see how it was toasting. Then slide along as you see necessary. Stove requires more vigilance than a heat gun, but works just the same.
