Hunters discussing Unit S66 in Colorado highlight its challenging terrain, which requires good physical preparation and familiarity with the area. The unit is appreciated for its reasonable success rates and the prevalence of mature game, particularly during the early seasons when elk migration patterns can be advantageous. The draw odds are favorable compared to other units, making it an attractive option for those willing to put in the effort. Some recommend scouting trips prior to the hunting season to get a firsthand understanding of the terrain and game movements, enhancing the likelihood of a successful hunt.