Most people use Old Army pass, at the edge of the last lake in the basin. This is both easier and shorter than New Army Pass, although the new Army Pass trail is better maintained.
I reckon I'm not most people as I have been in the Cottonwood Lakes Basin on numerous occasions and always proceeded over New Army Pass. I'm looking to visit this area late September and figure it is worth considering Old Army Pass. Is it reasonably doable with a full pack? Is anyone aware of winter developments making the route more hazardous? My destination is Mitre Basin and beyond.