I really enjoyed this boulder. My wife and I were there this past week. We're basically beginners with less than 10 trips to the climbing gym under our belt and our first outdoor climbing experience. Loved this boulder. Lots of great holds. Did both the presidential and traverse.
I agree directions could be better. Here's what I can add: You want to park at the parking pullout right before 4 Mile Trail, but parking at 4 Mile Trail is OK as well. We just kept hiking up from the horse trail until we came across a worn trail which lead to the boulder. Also I would like to note that the picture of the boulder in the book is the side with the presidential traverse, but this is the back side of the boulder. You won't see this side from the trail. Hope that helps someone find it a bit easier.