I used two large cans of pumpkin that I baked and added to the mash. I didnt have any problems with the temps I think I missed by 1 degree so I just went with it around 154. I did however decide to double the spice and added to the last 5 minutes of boil. I moved mine to a carboy today after two weeks in the primary to age and clear a few weeks before I bottle it. Hit the gravity right on and it tastes wonderful. It is a very pretty orange and the aroma is unreal. The pumkin and the spice are very subtle even after doubling the spices. You can for sure taste the pumkin at the back end. I vote for pumpkin in pumpkin ale, I dont think it will have the mouth feel and the great color without it.