The standard way is via Fourth of July Creek to Icicle Ridge. We went in from Icicle Ridge trailhead near Leavenworth. It was a lot of gain, and I had newer boots that weren't working for my feet. We found a spot to camp near a bit of water/snow patches. Wonderful views of lights below at night but quite cold. Second day we set off across the ridge - lots of ups and downs, but we made it to the lookout site. There were already a few other people there, but we didn't really see anyone on the route we took after the first two miles. We spent two nights up there so we could truly enjoy the ridge.