Hunters discussing Idaho's Unit 21A highlight its challenging terrain, which requires good physical fitness and navigation skills. Seasonality plays a significant role in game movement, with many noting that elk are more elusive during regular hunting seasons, necessitating pre-season scouting for success. Draw odds are generally low, indicating high demand and competition among hunters. Overall, successful experiences in this unit emphasize the importance of preparation and perseverance in tackling its rugged landscapes.