Hunters discussing Colorado's Unit 42 provide a mix of insights and cautionary tales. Black bear activity is noted at elevations around 9,000 feet in aspen and timber areas, with some advising that bears occasionally charge, so be prepared with deterrents like bear spray. The unit is more crowded during elk and deer seasons, with over-the-counter tags available for private land, yet chasers of opportunity recommend purchasing a bear tag if you're hunting other game. When it comes to access, the Battlement Jeep Trail is fit for advanced off-road vehicles only, suggesting those venturing into rugged areas either prepare with the right equipment or opt for alternate hiking trails. Overall, hunters highlight the abundance of game alongside challenges with terrain and crowds, emphasizing the necessity of using quality maps and being prepared for tough driving conditions.