HI Theo,
I just responded to your post. I have been up Muir route probably 30 times; up to the Flats a handful of times; up the DC a few times. I have never turned back due to exhaustion, etc. Been to the top 10 years ago and up Schurman route almost to the top but turned back due to a white out. Bottom line: I'd like to climb up to Muir one day; then go to the flats early on next day and then head up the DC early evening when it is not pitch dark and then traverse up to the top the rest of the way. The shelters are not open now so would need a tent and rope, etc. I have had crevesse rescue training but not an expert on this. I'm familar with the mountain. Ideally, need a team of 3 or 4 to go all the way. My experience is once you get past the DC, then it's alot of traversing, etc. to the top. If you are interested, you can reach me at: 206-755-1697; dave@chapmanmortgages.com