Scott,

I was in the park near the end of August and it was not unpleasant. The park was great, and the fishing in the park was decent despite the obvious heavy fishing pressure. I expected the crowds to be heavy, but it was worth putting up with the crowds to see the sights and be in the park. I did hike in the park to get away from the crowds, but there were quite a few people on the trails, too. I saw quite a bit of wildlife, including grizzly bears on the longer hikes that I took. I would assume that

I really like solitude. In my opinion, back packing or horse packing would be the best way of getting into more un-pressured fishing in the park and away from the tourists. I found that when I fished in areas outside of Yellowstone, I was able to get away from the crowds and into good fishing with much less effort.