Nobody else has mentioned this, but do you know the area you are hunting and the amount of pressure in the area. If a unit is open and great for glassing but crowded the spotting scope won't give you any real benefit. Sure there might be 20 elk a mile away, but do you have 10 people between you and the elk. If so your chances of getting there before anyone else is pretty low. Conversely, if you don't know the area yet, you don't really know if the spotting scope is useful or not based on terrain and habitat. If all you are after is a legal bull, then I would just rely on the binoculars.