Well, I'll tell you my plan.
Two days from Onion Valley to a base camp near Mt Tydall, one day to climb Mt Williamson, Mt Tyndall the next morning before heading south towards Whitney.
From what I've been told and researched, Mt Williamson is pretty hard hike through the Williamson Bowl and some chances for wrong turns going up to the summit.
No trail marked on the maps, but some good trail descriptions and GPX tracks on the net if you search. I'd do some research on the best routes to the summit. Doesn't sound like it's clear cut route from what I've read.
But then I had trouble following the cairns on Mt Langley for some reason, so maybe I'm just directional challenged.
Here's some good info on a Mt Williamson and Tyndall trek:
http://www.peakbagger.com/climber/ascent.aspx?aid=728160 The route he took is very close to what I've been planning (even the cross country trek towards Mt Russell). But the route around the east of Center Peak is different than I palnned. Anyone know if that's a good route (vs sticking closer to the JMT on the west side?
