Unit 20 in Idaho offers a challenging yet rewarding hunting experience, according to comments from hunters. The terrain can be difficult to navigate due to its mountainous regions and dense forests, but those willing to put in the effort have noted satisfying outcomes. Seasonality is crucial, with some hunters pointing out that understanding game patterns during different times of the year can enhance success rates. Overall, there's a shared sentiment that preparation and persistence are key, alongside a deep understanding of game behavior in this rugged unit.