The south ridge, which is the west wall of Slagle basin and extends from Pk 13,330 to Pk 13,229, is class 2 with an easy, short class 2+ section to the summit. This section is better & firmer than the last short section of the route to the false summit from McCarty basin. (Note that there is a higher summit just north of 13,229 - 13,229 is on the USGS topo while the other peak doesn't have an elevation - it is ~ 13,290 by GPS.)
The ridge can be attained from Slagle Basin - head for the obvious attainable saddle between 13,290 and 13,330. (Note that on the summit register, the peak is named "Proposal Peak" - details in the register.) Slagle Basin is easily reached from McCarty Basin.