Applegate Peak is another summit in Crater Lake National Park, but has more challenging route-finding and hiking than others. It is about 1.7 miles one-way cross-country - there is no trail or significant landmarks. A GPS with waypoints and a feeling for following the 'easy way' up draws and drainages will be useful for finding Applegate Peak, and more importantly, you way back.
Along the park's southern portion of Rim Drive, park in the small pullout near 42.87885 -122.10983. There are no other nearby places.
From here, go through the woods along the drainage into clearings and head toward 42.88239 -122.10939. Continue up along the drainages to 42.88663 -122.11184 and then to 42.88948 -122.11035. Again, follow the drainage curving to the left and heading through the woods. Once you exit the woods you'll pretty much be able to see to the summit. I headed up to the left ridgeline to make the top. The summit area is not easy - it's a sharp ridge on both sides with little to recommend it. The south side is fairly steep with no place that's level to set for a spell or to facilitate antenna set up. I appreciated having these waypoints (and even a few more) to make my way back down through the meadows and woods. Don't neglect to use your GPS to mark the location of your car!