Great hike on 5/23. Did the full loop. Trail is mostly dry with a few isolated snow drifts and occasional mud at higher elevations. I brought traction with me but never found it necessary all the way to the summit or on the descent. I would only recommend attempting the summit from the north approach (Left at the marker - walk through Horsethief Park). This section is fairly well established and the trail has a number of cairns to aid in way finding. This will eventually take you to a large boulder field as others mentioned. There are multiple cairned routes through the boulder field. As others have stated, it seems best to try to stay left. I originally started taking one of the routes more to the right side which seemed more direct and eventually had to make my way left anyway to get to an easier route. Staying left initially would have saved time. Summit requires some class 3 moves. USGS summit marker is in the top of a rock slightly north and slightly below the highest rocks at the summit. The southern part of the loop which descends into Horsethief Park near the falls is much less clearly marked. I didn’t see any cairns or tape or anything else to denote a route on the descent so I was happy to have GPS with me. This part of the trail gets very vertical in some spots but is generally doable with caution. Some class 3 down climbing over rock formations I found necessary sticking to the GPS track, YMMV. Overall beautiful hike and the views are well worth the effort. If I were to do this trail again I might consider backtracking the way I came after summiting rather than doing the loop as it seems this section is both much more clearly marked as well as less vertical.