I was out last weekend and it was still pretty quiet. I called a bull in for my brother-in-law second day of the season and we now have meat in the freezer, but he came in quiet. You can still hunt effectively even when they aren't very vocal- it's just a lot more fun when they are screaming.

You should have fun in the Bob. I have heard there are some monster bulls in there. The weather has cooled this week, so hopefully it will be enough to get them going.