BOILthe skull. This will remove all of the flesh. Try to position the skull so the antlers begin where the bubbles of the boil are popping.
Trade secret: carefully(for your sake, not the skulls)take an air compressor to thenasal holesof the deer and much of the brain will explode out the bigger whole in the back of the deer where the spinal cord used to connect in. If this doesn't work sometimes it may be appropriate to drill a small hole in the upper pallet of the deers mouth, since it will not be visable on the mount and use it as your air compressors entry point. This method is even more effective for speeding up the process when you attach a little L shaped wire to a drill and use the spinal cord whole to stick the wire into the brain and blend it up a little....just be careful during the whole process as the brains like to get the last laugh by hitting your face if you're not paying attention.