Overview
The southwest ridge of Ragged Peak is an enjoyable class-3 climb that I think would be well worth any scrambler's time.
Approach
From the Lembert Dome parking area, take the signed trail towards Young Lakes. Once you're through the trees, Ragged Peak will come into view. After about ~4 miles (from the parking area), the trail passes right below the start of Ragged's SW ridge. Leave the trail here and head up to the right.
Ragged Peak (SW Ridge Start)
Route Description
A bit of sand at the beginning quickly gives way to steep, solid rock. I was able to find a class-3 way up without any difficulty, and there are no doubt multiple options. (It can also be made more difficult if desired.) After several steep sections (each one appearing from below as if it's the top), the ridge more or less levels out for the remainder of the traverse.
Ragged Peak (SW Ridge)
From this point on, the ridge is a fairly level class-3 traverse all the way to the summit. Sticking to the ridge proper provides the most entertainment, dodging brush or gendarmes as needed. There's even some exposure in places. The summit block is class-3 as well (see main page for an image of the required route).
For a nice descent, sashay down the sandy south slope and continue south through the high meadows of Dingley Creek. Eventually you'll run back into the Young Lakes trail.
Essential Gear
None needed