It's a piece of cake to be honest - no need to recce.
http://www.flickr.com/photos/8011535...7604637599232/
Have a look at some pics on this link - you will see how there are a few lines up Robinson and it would seem from having tried a few different ones that it doesn't really matter.

As for the descent of Dalehead, it seems the elite end / good descender seem to take a left hand line, more careful runners head right of the tarn and most direct for the tarn.
Not sure it's going to make or break your race whatever you do.

But it's fantastic and as slow as I am this year I'm still thoroughly looking forward to it. It will be steady as I'm at the PPP the week after.