It is a hell of a gamble, as mentioned in this post. My group last year went 1 for 2 on nice bulls but saw plenty, and the group after us went 0 for 5- just terrible weather the entire time that barely allowed them to hunt, and when they could, the herds weren't there. It was a hell of an experience, but I was difnitely lucky to have come out of it successfully. Feel free to PM if you'd like more specifics.