Last year I started a post on here, asking for advice about climbing Snake Dike on Half Dome.
http://www.ukclimbing.com/forums/t.php?t=549370&v=1#x7342102
It's taken a while but we finally have a video of the route.
We decided to do the route in a day, starting and finishing in Yosemite Valley. The day before the climb was a rest day so we walked up to Nevada Falls and towards the Lost Lake. As well as getting some great photos, this saved us time route finding for the early start the next day.
I'd definitely recommend this route, and to do it in a day.
Thanks to those that gave me the advice.