I'm planning on coming in via an old abandoned trail from Horseshoe Meadows -- along the South Fork Cottonwood Creek (Some maps show the old trail), then over New Army, maybe tag Langley, then on to Sky Blue. I'm planning on doing some fishing there and in upper Crabtree. Wish me luck!
I'll let you know how the conditions are on that trail next month- that's the route we plan on taking back to the trail head from Cottonwood Lakes.
I've thought about taking a similar route and then making the slog up the sand hill from Crabtree Lakes to Discovery Pinnacle to summit Whitney. It sounds a lot better going down the sand hill from Discovery Pinnacle and then up Crabtree Pass into the Miter Basin.