Hunters discussing Unit 681 in Colorado emphasize its challenging terrain, which requires a good level of physical fitness. Draw odds are moderate, offering a reasonable opportunity for those looking to hunt elk and deer, particularly during the later seasons when animal movement increases. Contributions suggest success comes from understanding animal behavior in response to weather patterns and scouting during the off-season to identify routes animals use. Overall, there's a sense of optimism and preparedness among hunters, with many valuing the area's potential for rewarding experiences with the right preparation.