As you finish Horsehoe Falls rapid, look for a small eddy on river left with a granite rock landing area. Pull your rafts over here. The jump rock is an easy walk / scramble to the top of the granite pillar. Leave your PFD on and enjoy.
There’s been a lot of interest in this jump rock recently. Please keep in mind that it is raft in only, you can’t access it from the road or by trail.
Fun YouTube Short of the jump rock that we filmed.